{"id":33674,"date":"2026-03-04T14:01:05","date_gmt":"2026-03-04T06:01:05","guid":{"rendered":"https:\/\/www.accteklaser.com\/?p=33674"},"modified":"2026-02-24T14:50:36","modified_gmt":"2026-02-24T06:50:36","slug":"a-lezerhegesztes-befolyasolja-a-hegesztett-anyag-mikroszerkezetet","status":"publish","type":"post","link":"https:\/\/www.accteklaser.com\/hu\/does-laser-welding-affect-the-microstructure-of-the-welded-material\/","title":{"rendered":"A l\u00e9zerhegeszt\u00e9s befoly\u00e1solja a hegesztett anyag mikroszerkezet\u00e9t?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"33674\" class=\"elementor elementor-33674\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-59e08784 e-flex e-con-boxed e-con e-parent\" data-id=\"59e08784\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-27f70d0 e-con-full e-flex e-con e-child\" data-id=\"27f70d0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3a81b693 elementor-widget elementor-widget-image\" data-id=\"3a81b693\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.accteklaser.com\/wp-content\/uploads\/elementor\/thumbs\/Does-laser-welding-affect-the-microstructure-of-the-welded-material-rjm3of34tz928qb4eb84qbzc1dsbn9inbxci6lu6v4.jpg\" title=\"Does laser welding affect the microstructure of the welded material\" alt=\"Does laser welding affect the microstructure of the welded material\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7ca17bac elementor-widget elementor-widget-heading\" data-id=\"7ca17bac\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\">Does laser welding affect the microstructure of the welded material?<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-958c098 elementor-widget elementor-widget-text-editor\" data-id=\"958c098\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tWhen you join two pieces of metal together using laser welding, the weld surface is often smooth and flat, with almost no visible defects. However, the true determinant of weld quality goes far beyond these &#8220;visible&#8221; aspects. For any manufacturer that prioritizes product quality, structural reliability, and long-term service life, the more critical question is: what changes occur inside the metal under the influence of high-energy laser light? The answer directly impacts the strength, toughness, fatigue performance, and stability of the weld joint under complex operating conditions.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-84a35c8 elementor-widget elementor-widget-text-editor\" data-id=\"84a35c8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tIn fact, the high energy density and extremely rapid heating during laser welding, followed by the cooling cycle, significantly alter the material&#8217;s microstructure, including grain morphology, phase composition, and the distribution characteristics of the heat-affected zone. These microscopic changes are not simply &#8220;side effects,&#8221; but rather core factors determining the overall performance of the weld. Improper process parameter control can lead to microstructural embrittlement, residual stress concentration, or decreased corrosion resistance; while through reasonable power, welding speed, laser spot control, and shielding gas selection, welded joints with refined grains, uniform microstructure, and excellent performance can be obtained.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-590ce04c elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"590ce04c\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;exclude_headings_by_selector&quot;:[],&quot;headings_by_tags&quot;:[&quot;h2&quot;],&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<div class=\"elementor-toc__header-title\">\n\t\t\t\tTable of Contents\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__590ce04c\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__590ce04c\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__590ce04c\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-13db55c0 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"13db55c0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-32db0351 elementor-widget elementor-widget-image\" data-id=\"32db0351\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.accteklaser.com\/wp-content\/uploads\/elementor\/thumbs\/The-Basic-Working-Principle-of-Laser-Welding-rjm3pr0rn3xpghsutwxe98db3hpppfocu2rwjy14uq.jpg\" title=\"The Basic Working Principle of Laser Welding\" alt=\"The Basic Working Principle of Laser Welding\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6d22872a elementor-widget elementor-widget-heading\" data-id=\"6d22872a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The Basic Working Principle of Laser Welding<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4ddaf816 elementor-widget-divider--separator-type-pattern elementor-widget-divider--no-spacing elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"4ddaf816\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\" style=\"--divider-pattern-url: url(&quot;data:image\/svg+xml,%3Csvg xmlns=&#039;http:\/\/www.w3.org\/2000\/svg&#039; preserveAspectRatio=&#039;none&#039; overflow=&#039;visible&#039; height=&#039;100%&#039; viewBox=&#039;0 0 24 24&#039; fill=&#039;black&#039; stroke=&#039;none&#039;%3E%3Cpath d=&#039;M24,8v12H0V8H24z M24,4v1H0V4H24z&#039;\/%3E%3C\/svg%3E&quot;);\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-215e06fc elementor-widget elementor-widget-text-editor\" data-id=\"215e06fc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tLaser welding focuses a high-energy-density laser beam onto the material surface, instantly generating temperatures of thousands of degrees Celsius, causing the metal to rapidly melt and solidify to form a weld. The entire process takes only seconds or even milliseconds, but within this short time, the material undergoes intense heating and cooling cycles, resulting in significant changes to its internal metal grain structure, phase composition, and stress distribution.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-48baac5 elementor-widget elementor-widget-text-editor\" data-id=\"48baac5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tCompared to traditional arc welding, <a href=\"https:\/\/www.accteklaser.com\/laser-welding-machine\/\">laser welding\u00a0machines<\/a>\u00a0has a more concentrated heat input and faster heating and cooling rates. This extreme thermal cycling leads to unique microstructural evolution, bringing advantages such as fine grains and high strength, but also potential challenges such as residual stress and localized embrittlement. Understanding the mechanisms of these microstructural changes is crucial for optimizing welding processes and ensuring product quality.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-232b2c9d elementor-widget elementor-widget-heading\" data-id=\"232b2c9d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Microstructural Changes in the Welded Zone<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9f7231a elementor-widget elementor-widget-text-editor\" data-id=\"9f7231a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tThe HAZ is the area around the weld that is not melted but is affected by heat. Although the metal remains solid, high temperatures still induce a series of microstructural changes. The most obvious change is grain growth. At high temperatures, metal grains grow through grain boundary migration, potentially increasing in size several times over. Larger grains typically reduce the material&#8217;s strength and toughness, which is why the heat-affected zone (HAZ) sometimes becomes a weak point in welded joints.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-38afb8a elementor-widget elementor-widget-text-editor\" data-id=\"38afb8a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tPhase transformation is another important microscopic change in the HAZ. For steel, when the temperature exceeds a certain critical value, the original ferrite or pearlite structure transforms into austenite. Subsequent rapid cooling may transform austenite into martensite, bainite, or other phases, which vary greatly in hardness and toughness. Different phase compositions directly determine the mechanical properties of the HAZ.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-207a0b9 elementor-widget elementor-widget-text-editor\" data-id=\"207a0b9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tResidual stress is also a significant characteristic of the HAZ. Materials expand when heated and contract when cooled, but due to uneven temperature distribution during welding, the thermal expansion and contraction of different regions are constrained by adjacent materials, resulting in internal stress. These residual stresses can reach 50% or even higher of the material&#8217;s yield strength, reducing fatigue life and increasing the risk of cracking.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1b84dc10 elementor-widget elementor-widget-heading\" data-id=\"1b84dc10\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Microscopic Characteristics of the Fusion Zone<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-69f7397f elementor-widget elementor-widget-text-editor\" data-id=\"69f7397f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tThe fusion zone is the area where the metal completely melts and resolidifies during welding, and its microstructure undergoes the most dramatic changes. Typical dendritic structures form during solidification. The molten metal begins to solidify at the solid-liquid interface, growing columnar or dendritic crystals along the direction of fastest heat dissipation. These grains often grow from the fusion line towards the weld center, meeting at the weld center.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-03349ff elementor-widget elementor-widget-text-editor\" data-id=\"03349ff\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tElemental segregation is prone to occur during dendrite growth, meaning that alloying elements are unevenly distributed within the grains and at grain boundaries. Some elements accumulate in the liquid phase between dendrite arms, forming micro-regions with inhomogeneous composition after solidification. This segregation can lead to localized properties that differ from the base material, sometimes reducing corrosion resistance or promoting crack initiation.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-923b629 elementor-widget elementor-widget-text-editor\" data-id=\"923b629\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tPorosity and inclusions are common defects in the fusion zone. During welding, vapors from metal evaporation, shielding gases, or gases such as nitrogen and hydrogen from the air may become trapped in the solidified metal, forming pores. If the material surface has oxides, oil, or other impurities, these may also enter the molten pool and remain in the weld. These defects can significantly reduce the strength and fatigue performance of welded joints.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2c0468b elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"2c0468b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8155ad8 elementor-widget elementor-widget-image\" data-id=\"8155ad8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.accteklaser.com\/wp-content\/uploads\/elementor\/thumbs\/Microstructural-Response-of-Different-Metals-rjm3p1n4ikyyr0tpy3ygvwrv236sxlvlql5slh2riq.jpg\" title=\"Microstructural Response of Different Metals\" alt=\"Microstructural Response of Different Metals\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a89ae14 elementor-widget elementor-widget-heading\" data-id=\"a89ae14\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Microstructural Response of Different Metals<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8fc0e4f elementor-widget-divider--separator-type-pattern elementor-widget-divider--no-spacing elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"8fc0e4f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\" style=\"--divider-pattern-url: url(&quot;data:image\/svg+xml,%3Csvg xmlns=&#039;http:\/\/www.w3.org\/2000\/svg&#039; preserveAspectRatio=&#039;none&#039; overflow=&#039;visible&#039; height=&#039;100%&#039; viewBox=&#039;0 0 24 24&#039; fill=&#039;black&#039; stroke=&#039;none&#039;%3E%3Cpath d=&#039;M24,8v12H0V8H24z M24,4v1H0V4H24z&#039;\/%3E%3C\/svg%3E&quot;);\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bd2b13c elementor-widget elementor-widget-text-editor\" data-id=\"bd2b13c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tDifferent metallic materials exhibit different microstructural changes during laser welding. Understanding these differences is crucial for selecting appropriate welding parameters and post-processing techniques.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-26326048 elementor-widget elementor-widget-heading\" data-id=\"26326048\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Microstructural Evolution of Stainless Steel<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5640fe03 elementor-widget elementor-widget-text-editor\" data-id=\"5640fe03\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Austenitic Stainless Steels: Such as 304 and 316, after laser welding, the fusion zone typically retains an austenitic structure, but the grains become significantly coarser. Due to the poor thermal conductivity of austenitic stainless steel, the heat-affected zone is relatively narrow. A small amount of ferrite may precipitate in the weld; the presence of this ferrite can improve resistance to hot cracking, but excessive amounts will reduce corrosion resistance. Chromium carbide may precipitate at grain boundaries, leading to increased intergranular corrosion tendency if heated to the sensitization temperature range of 450-850\u00b0C.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4905848 elementor-widget elementor-widget-text-editor\" data-id=\"4905848\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Ferritic Stainless Steels: Such as 430, the weld microstructure is mainly composed of coarse ferrite grains. Grain growth is more pronounced in the heat-affected zone, potentially resulting in significant softening. Because ferritic stainless steel tends to grow at high temperatures, the weld toughness is often inferior to that of the base material. Carbides and nitrides may precipitate at grain boundaries, affecting the material&#8217;s plasticity.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e9631be elementor-widget elementor-widget-text-editor\" data-id=\"e9631be\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Martensitic stainless steel: After welding, such as 420 stainless steel, a hard and brittle martensitic structure forms in both the fusion zone and the heat-affected zone. While this structure has high hardness, it has poor toughness and is prone to cold cracking. Preheating and post-weld heat treatment are usually required to improve its properties. Duplex stainless steel is more complex; welding alters the ratio of austenite to ferrite, affecting the balance between strength and corrosion resistance.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-66ee097e elementor-widget elementor-widget-heading\" data-id=\"66ee097e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Phase transformation and microstructure of carbon steel<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-32463234 elementor-widget elementor-widget-text-editor\" data-id=\"32463234\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Low-carbon steel, due to its low carbon content, shows little phase transformation during welding. The fusion zone mainly consists of fine ferrite and pearlite. Grains in the heat-affected zone grow, but due to the low carbon content, the hardening tendency is not significant, and hard and brittle martensite generally does not form. Welding performance is relatively good, and cracking is less likely.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2984cfab elementor-widget elementor-widget-text-editor\" data-id=\"2984cfab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>High-carbon steel is much more complex. Due to its high carbon content, martensitic structure easily forms in the heat-affected zone during welding, leading to a sharp increase in hardness and a decrease in toughness. The formation of martensite generates structural stress, which, combined with the thermal stress of welding itself, makes high-carbon steel prone to cold cracking. Welding high-carbon steel typically requires preheating, controlled cooling rates, or tempering to reduce the risk of cracking.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7c81389 elementor-widget elementor-widget-heading\" data-id=\"7c81389\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Aluminum Alloys: Special Challenges<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-23a5354 elementor-widget elementor-widget-text-editor\" data-id=\"23a5354\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Pure aluminum has extremely high thermal conductivity, requiring significant power for laser welding. The weld microstructure is usually equiaxed with relatively fine grains. However, aluminum alloys present a much more complex situation. 6-series aluminum alloys, such as 6061, are strengthened through age precipitation; the high welding temperatures cause the strengthening phases to dissolve or coarsen, leading to significant softening of the heat-affected zone. This softening phenomenon is common in aluminum alloy welding and can reduce joint strength by 30% or more.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-af25694 elementor-widget elementor-widget-text-editor\" data-id=\"af25694\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Welding 7-series and 2-series high-strength aluminum alloys is even more challenging. These alloys are highly sensitive to hot cracking and are prone to cracking during solidification. The dendritic structure in the fusion zone is coarse, alloy element segregation is severe, and certain low-melting-point eutectic phases precipitate at grain boundaries, becoming crack initiation points. Cracking tendency needs to be reduced by adding filler material, optimizing welding speed, or using special weld trajectories.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-902579d elementor-widget elementor-widget-heading\" data-id=\"902579d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Microstructure Control of Titanium Alloys<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5db3633 elementor-widget elementor-widget-text-editor\" data-id=\"5db3633\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Pure titanium and titanium alloys readily absorb gases such as oxygen and nitrogen at high temperatures, forming brittle compounds. Strict gas protection is essential during laser welding, requiring argon purging not only on the front side of the molten pool but also on the back side. The weld microstructure is typically composed of coarse columnar grains, consisting of \u03b1 phases transformed from the \u03b2 phase.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6e943dd elementor-widget elementor-widget-text-editor\" data-id=\"6e943dd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Ti-6Al-4V is the most widely used titanium alloy, belonging to the \u03b1+\u03b2 type alloy. After welding, the fusion zone mainly consists of \u03b1-phase lamellae within coarse \u03b2 grains. The heat-affected zone can be divided into \u03b2, \u03b1+\u03b2, and \u03b1 regions depending on the temperature, each with a different phase composition and grain size. The weld strength can typically reach over 90% of the base material, but plasticity is reduced. If the cooling rate is too rapid, martensitic \u03b1&#8217; phase may form; this phase is very hard but brittle.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f999536 elementor-widget elementor-widget-heading\" data-id=\"f999536\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">High-Temperature Properties of Nickel Alloys<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1031076 elementor-widget elementor-widget-text-editor\" data-id=\"1031076\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>After welding, nickel-copper alloys such as Monel 400 exhibit a solid solution structure in the fusion zone with coarse grains. Due to the wide solidification temperature range of nickel alloys, hot cracking is prone to occur. Intermetallic compounds may precipitate in the weld, affecting toughness. However, the oxidation and corrosion resistance of nickel alloys are largely maintained after welding, which is a significant advantage.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-50f84e8 elementor-widget elementor-widget-text-editor\" data-id=\"50f84e8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Nickel-chromium alloys such as Inconel 718 are more complex. This high-temperature alloy achieves high strength through reinforcing phases such as \u03b3&#8217; and \u03b3&#8221;, and welding alters the distribution of these reinforcing phases. The reinforcing phases in the fusion zone dissolve, leading to softening. Harmful \u03b4-phase and carbides may precipitate in the heat-affected zone, reducing the material&#8217;s creep strength and resistance. Post-weld solution treatment followed by aging is typically required to restore performance.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6daa1fa elementor-widget elementor-widget-heading\" data-id=\"6daa1fa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">The High Thermal Conductivity of Copper's Impact<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d174eab elementor-widget elementor-widget-text-editor\" data-id=\"d174eab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tPure copper has a thermal conductivity ten times that of steel, making laser welding extremely difficult. Heat dissipates rapidly, making it difficult to establish a stable molten pool. Even if welding is successful, the grains in the fusion zone will be very coarse and prone to absorbing hydrogen, forming porosity. Copper alloys such as brass and bronze are relatively easier to weld because the alloying elements reduce thermal conductivity. However, zinc evaporation produces a lot of fumes and spatter, and the weld is prone to porosity.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ae81a44 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"ae81a44\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-25d605a7 elementor-widget elementor-widget-image\" data-id=\"25d605a7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.accteklaser.com\/wp-content\/uploads\/elementor\/thumbs\/Key-Measures-for-Controlling-Microstructure-Changes-rjm3opf81qi8k3bgxgobhhuvc2v15jj3cwohcvkvrm.jpg\" title=\"Key Measures for Controlling Microstructure Changes\" alt=\"Key Measures for Controlling Microstructure Changes\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5916e752 elementor-widget elementor-widget-heading\" data-id=\"5916e752\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Key Measures for Controlling Microstructure Changes<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5f576bd4 elementor-widget-divider--separator-type-pattern elementor-widget-divider--no-spacing elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"5f576bd4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\" style=\"--divider-pattern-url: url(&quot;data:image\/svg+xml,%3Csvg xmlns=&#039;http:\/\/www.w3.org\/2000\/svg&#039; preserveAspectRatio=&#039;none&#039; overflow=&#039;visible&#039; height=&#039;100%&#039; viewBox=&#039;0 0 24 24&#039; fill=&#039;black&#039; stroke=&#039;none&#039;%3E%3Cpath d=&#039;M24,8v12H0V8H24z M24,4v1H0V4H24z&#039;\/%3E%3C\/svg%3E&quot;);\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-36ab63a2 elementor-widget elementor-widget-text-editor\" data-id=\"36ab63a2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tWhile laser welding inevitably causes microstructure changes, proper process control can minimize adverse effects and even achieve performance superior to the base material.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5a51cbd3 elementor-widget elementor-widget-heading\" data-id=\"5a51cbd3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Importance of Pre-weld Treatment<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-19c08045 elementor-widget elementor-widget-text-editor\" data-id=\"19c08045\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tHeat treatment can improve the weldability of materials. For highly hardenable materials, pre-weld annealing can reduce hardness and the risk of cracking. For certain aluminum and titanium alloys, solution treatment can homogenize the microstructure and reduce the tendency for welding defects. Preheating is also a common method, especially for thick plates and high-carbon steel, as it can reduce the cooling rate, decrease martensite formation, and reduce residual stress.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8720668 elementor-widget elementor-widget-text-editor\" data-id=\"8720668\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tSurface preparation has a significant impact on weld quality. Oxide layers, oil, and moisture can all lead to porosity and inclusions. The surface should be thoroughly cleaned before laser welding, using methods such as mechanical grinding, chemical cleaning, or plasma treatment. For aluminum alloys, the surface oxide film also needs to be removed because the high melting point of aluminum oxide hinders the formation and flow of the molten pool.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d36bf22 elementor-widget elementor-widget-heading\" data-id=\"1d36bf22\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Precise Control of Welding Parameters<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2fca35bb elementor-widget elementor-widget-text-editor\" data-id=\"2fca35bb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tThe matching of laser power and welding speed directly affects the microstructure. Excessive power can cause overheating, spatter, and coarse grains. Insufficient power leads to inadequate penetration and a higher risk of incomplete fusion. Welding speed affects cooling rate and the width of the heat-affected zone (HAZ). Fast welding reduces the HAZ but may result in a hard, brittle phase. Slow welding allows for sufficient diffusion and a more uniform microstructure, but it also results in higher heat input and greater deformation.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1b2cb8d elementor-widget elementor-widget-text-editor\" data-id=\"1b2cb8d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tThe beam focusing position significantly influences weld shape and microstructure. Focusing on the surface yields the highest energy density, suitable for thin-plate welding. Slightly defocusing on the surface provides better penetration and a more stable molten pool. The amount of defocusing needs to be determined based on material thickness and joint type. Modern laser systems can also employ dynamic focusing and beam oscillation techniques to improve molten pool flow and solidification behavior, resulting in finer, more uniform grains.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-36a8568c elementor-widget elementor-widget-heading\" data-id=\"36a8568c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">The Role of Post-Weld Heat Treatment<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4a3b0eb9 elementor-widget elementor-widget-text-editor\" data-id=\"4a3b0eb9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tPost-weld heat treatment is an effective means of improving microstructure and properties. Stress-relieving annealing reduces residual stress, decreasing deformation and cracking tendency. For martensitic stainless steel and high-carbon steel, tempering reduces hardness and increases toughness. Aging treatment can partially restore the strength of precipitation-strengthened aluminum and nickel alloys.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-692767c elementor-widget elementor-widget-text-editor\" data-id=\"692767c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tSolution treatment followed by aging is a common post-weld treatment process for high-temperature alloys. Solution treatment homogenizes the coarse as-cast structure and eliminates segregation. Aging treatment promotes the precipitation of strengthening phases, restoring or exceeding the strength of the base material. The heat treatment temperature, time, and cooling rate need to be carefully designed according to the material type; inappropriate heat treatment may be counterproductive.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9615c83 elementor-widget elementor-widget-text-editor\" data-id=\"9615c83\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tShot peening introduces compressive stress into the surface layer by impacting the surface with high-speed shots, which can offset some of the tensile residual stress. Compressive stress can also improve fatigue strength because cracks are less likely to initiate and propagate under compressive stress. Shot peening can also refine the surface grains, improving hardness and wear resistance. This mechanical surface treatment method is effective for both welds and heat-affected zones.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-493e92c2 elementor-widget elementor-widget-heading\" data-id=\"493e92c2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Shielding Gas Selection<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d4af36e elementor-widget elementor-widget-text-editor\" data-id=\"1d4af36e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tArgon is the most commonly used shielding gas. It is chemically stable and does not react with metals. Its density is greater than that of air, effectively isolating it from air and preventing oxidation. Argon is suitable for welding most materials, including stainless steel, titanium alloys, and nickel alloys. However, argon has low thermal conductivity, which may affect the stability of the molten pool in some cases.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-849ace1 elementor-widget elementor-widget-text-editor\" data-id=\"849ace1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tHelium has a higher thermal conductivity than argon, which can improve welding speed and penetration depth. It is particularly suitable for welding materials with good thermal conductivity, such as aluminum and copper. However, helium has a lower density and is easily disturbed, making its protective effect less stable than argon. In practical applications, an argon-helium mixture is often used to combine the advantages of both. The mixing ratio is adjusted according to the material and welding conditions, generally with a helium content between 25% and 75%.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5eb742f elementor-widget elementor-widget-text-editor\" data-id=\"5eb742f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tFor reactive metals such as titanium, simple front-side protection is insufficient; a drag shield protection for the back of the weld is also required. The entire welding process is carried out in an environment filled with inert gas to ensure that the high-temperature metal does not come into contact with any oxygen or nitrogen. Gas purity is also very important, typically requiring above 99.99%, as trace amounts of oxygen and nitrogen can cause contamination.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7c2868c2 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"7c2868c2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-459182ad elementor-widget elementor-widget-image\" data-id=\"459182ad\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.accteklaser.com\/wp-content\/uploads\/elementor\/thumbs\/The-Impact-of-Microstructure-Changes-on-Performance-rjm3q2atx4d5btch01sx35iu84649sx4vmlqb9kes2.jpg\" title=\"The Impact of Microstructure Changes on Performance\" alt=\"The Impact of Microstructure Changes on Performance\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-539f9345 elementor-widget elementor-widget-heading\" data-id=\"539f9345\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The Impact of Microstructure Changes on Performance<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3eae1ce8 elementor-widget-divider--separator-type-pattern elementor-widget-divider--no-spacing elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"3eae1ce8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\" style=\"--divider-pattern-url: url(&quot;data:image\/svg+xml,%3Csvg xmlns=&#039;http:\/\/www.w3.org\/2000\/svg&#039; preserveAspectRatio=&#039;none&#039; overflow=&#039;visible&#039; height=&#039;100%&#039; viewBox=&#039;0 0 24 24&#039; fill=&#039;black&#039; stroke=&#039;none&#039;%3E%3Cpath d=&#039;M24,8v12H0V8H24z M24,4v1H0V4H24z&#039;\/%3E%3C\/svg%3E&quot;);\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-95073ee elementor-widget elementor-widget-text-editor\" data-id=\"95073ee\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tChanges in microstructure ultimately reflect in the macroscopic properties of the welded joint. Understanding this micro-macro relationship helps optimize processes and predict product lifespan.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5d7b1acc elementor-widget elementor-widget-heading\" data-id=\"5d7b1acc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">The Variation of Mechanical Properties<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4d6bf680 elementor-widget elementor-widget-text-editor\" data-id=\"4d6bf680\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tStrength and hardness are closely related to grain size and phase composition. Fine-grained strengthening is a fundamental principle of materials science; the finer the grain, the higher the strength. The rapid cooling of laser welding is conducive to the formation of fine grains, which is one of its advantages. However, if hard and brittle martensite or other phases are formed, although hardness is high, toughness will decrease significantly. Dendritic structures and coarse columnar grains in the fusion zone are often weak points in strength.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2fabbed elementor-widget elementor-widget-text-editor\" data-id=\"2fabbed\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tToughness and ductility are greatly affected by phase composition and residual stress. The presence of brittle phases reduces impact toughness and fracture toughness, making the material prone to brittle fracture. High tensile residual stress is equivalent to pre-applying a load to the material, reducing its actual load-bearing capacity. This is why some welds perform well in static tensile tests but fail prematurely under impact or fatigue loads.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-44b1f8a6 elementor-widget elementor-widget-heading\" data-id=\"44b1f8a6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Corrosion Resistance Considerations<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-398a40ce elementor-widget elementor-widget-text-editor\" data-id=\"398a40ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tInhomogeneity of the microstructure significantly affects corrosion resistance. Grain boundaries are preferential corrosion pathways. Although coarse grains have shorter total grain boundary lengths, individual grain boundaries are more likely to become corrosion paths. Compositional inhomogeneity caused by segregation also leads to electrochemical corrosion; regions enriched with certain elements and depleted regions form micro-cells, accelerating corrosion.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2f8ae8b elementor-widget elementor-widget-text-editor\" data-id=\"2f8ae8b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tIntergranular corrosion in stainless steel is a typical example. If the weld heat-affected zone remains within the sensitization temperature range, chromium carbide will precipitate at the grain boundaries, leading to chromium depletion near the grain boundaries and loss of the stainless steel&#8217;s passivation ability. This intergranular corrosion may not be visible on the surface but will penetrate deep into the material along the grain boundaries, causing severe damage.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-19c80fd elementor-widget elementor-widget-text-editor\" data-id=\"19c80fd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tChanges in phase composition also affect oxidation resistance and high-temperature corrosion resistance. Some high-temperature alloys rely on a protective oxide film on the surface to resist corrosion. Welding alters the distribution of alloying elements, potentially destroying the integrity and self-healing ability of the protective film. The precipitation of certain phases may also consume beneficial elements in the matrix, reducing overall corrosion resistance.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4ed94810 elementor-widget elementor-widget-heading\" data-id=\"4ed94810\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Factors determining fatigue performance<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-736f7fd6 elementor-widget elementor-widget-text-editor\" data-id=\"736f7fd6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tResidual stress has the most significant impact on fatigue performance. Tensile residual stress reduces fatigue strength and shortens fatigue life. This is because fatigue cracks typically initiate and propagate under tensile stress, and residual tensile stress is equivalent to increased working stress. Studies have shown that high residual stress in welds can reduce fatigue life by more than 50%.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3ee5bc85 elementor-widget elementor-widget-text-editor\" data-id=\"3ee5bc85\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tThe uniformity of the microstructure is also crucial. Regions with large hardness gradients tend to become stress concentration points, promoting crack initiation. Coarse second-phase particles and inclusions are preferential nucleation sites for cracks. Defects such as porosity and lack of fusion are even greater enemies of fatigue, acting as pre-cracks and significantly shortening the fatigue crack initiation stage.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dc7fb8c elementor-widget elementor-widget-text-editor\" data-id=\"dc7fb8c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tGrain orientation and texture also affect fatigue behavior. Certain grain orientations offer stronger resistance to crack propagation. The directional solidification of laser welding produces a certain texture; if the crack propagation direction is unfavorable to the grain orientation, it may accelerate failure. By controlling the welding direction and heat flow direction, the texture can be optimized to some extent, improving fatigue resistance.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4b75871b elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"4b75871b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3b673f6 elementor-widget elementor-widget-image\" data-id=\"3b673f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.accteklaser.com\/wp-content\/uploads\/elementor\/thumbs\/The-Impact-of-Microstructure-Changes-on-Performance-rjm3q2atx4d5btch01sx35iu84649sx4vmlqb9kes2.jpg\" title=\"The Impact of Microstructure Changes on Performance\" alt=\"The Impact of Microstructure Changes on Performance\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7819f566 elementor-widget elementor-widget-heading\" data-id=\"7819f566\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Summarize<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-665f6fbb elementor-widget-divider--separator-type-pattern elementor-widget-divider--no-spacing elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"665f6fbb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\" style=\"--divider-pattern-url: url(&quot;data:image\/svg+xml,%3Csvg xmlns=&#039;http:\/\/www.w3.org\/2000\/svg&#039; preserveAspectRatio=&#039;none&#039; overflow=&#039;visible&#039; height=&#039;100%&#039; viewBox=&#039;0 0 24 24&#039; fill=&#039;black&#039; stroke=&#039;none&#039;%3E%3Cpath d=&#039;M24,8v12H0V8H24z M24,4v1H0V4H24z&#039;\/%3E%3C\/svg%3E&quot;);\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4b95d8fb elementor-widget elementor-widget-text-editor\" data-id=\"4b95d8fb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tLaser welding does significantly alter the microstructure of materials, affecting multiple aspects, including grain size, phase composition, elemental distribution, and residual stress. Grain growth and phase transformation in the heat-affected zone, and dendrite growth and segregation in the fusion zone, all influence the performance of the weld joint. Different metallic materials exhibit varying microstructural responses; welding <a href=\"https:\/\/www.accteklaser.com\/laser-welding-machine\/stainless-steel-laser-welding-machine\/\">stainless steel<\/a>, <a href=\"https:\/\/www.accteklaser.com\/laser-welding-machine\/carbon-steel-laser-welding-machine\/\">carbon steel<\/a>, <a href=\"https:\/\/www.accteklaser.com\/laser-welding-machine\/aluminum-laser-welding-machine\/\">aluminum<\/a> alloys, titanium alloys, nickel alloys, and\u00a0<a href=\"https:\/\/www.accteklaser.com\/laser-welding-machine\/copper-laser-welding-machine\/\">copper<\/a>\u00a0each presents its own characteristics and challenges.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-be2f3f8 elementor-widget elementor-widget-text-editor\" data-id=\"be2f3f8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tThrough proper pre-weld preparation, precise parameter control, appropriate post-weld treatment, and correct shielding gas selection, microstructural changes can be effectively controlled, resulting in high-quality weld joints. Microstructural optimization ultimately manifests in improved mechanical properties, corrosion resistance, and fatigue performance. With advancements in laser technology and a deeper understanding of materials science, we can better predict and control the weld microstructure to meet the demands of various applications.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b2d681a elementor-widget elementor-widget-text-editor\" data-id=\"b2d681a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tFor manufacturers, understanding the microstructural changes in laser welding is not only a technical issue but also crucial for quality control and product innovation. In practical applications, this control over the microstructure relies heavily on stable, reliable, and process-adaptable laser welding equipment. AccTek Laser\u00a0prioritizes controllability and consistency in its laser welding solutions. Through highly stable laser sources, precise power and energy adjustment capabilities, and a deep understanding of the welding characteristics of various metals, AccTek Laser helps customers more effectively control heat input and molten pool behavior, resulting in uniform and predictable microstructures. For manufacturing companies seeking both high efficiency and high quality, <a href=\"https:\/\/www.accteklaser.com\/\">AccTek Laser&#8217;s<\/a> professional equipment and process support enable reliable, durable products with long-term quality stability without sacrificing welding performance.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d3f8314 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"1d3f8314\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-12512de5 elementor-post-navigation-borders-yes elementor-widget elementor-widget-post-navigation\" data-id=\"12512de5\" 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class=\"elementor-post-navigation__link__prev\"><span class=\"post-navigation__prev--label\">Previous<\/span><span class=\"post-navigation__prev--title\">What are the dust and fume removal requirements for laser welding?<\/span><\/span><\/a>\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-post-navigation__separator-wrapper\">\n\t\t\t\t\t<div class=\"elementor-post-navigation__separator\"><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"elementor-post-navigation__next elementor-post-navigation__link\">\n\t\t\t\t<a href=\"https:\/\/www.accteklaser.com\/hu\/how-to-handle-different-joint-configurations-in-laser-welding\/\" rel=\"next\"><span class=\"elementor-post-navigation__link__next\"><span class=\"post-navigation__next--label\">Next<\/span><span class=\"post-navigation__next--title\">How to Handle Different Joint Configurations in Laser Welding?<\/span><\/span><span class=\"post-navigation__arrow-wrapper post-navigation__arrow-next\"><svg aria-hidden=\"true\" 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href=\"https:\/\/www.accteklaser.com\/laser-equipment\/\">Laser Equipment<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3c1c556c elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"3c1c556c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.accteklaser.com\/laser-cutting-machine\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-folder\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M464 128H272l-54.63-54.63c-6-6-14.14-9.37-22.63-9.37H48C21.49 64 0 85.49 0 112v288c0 26.51 21.49 48 48 48h416c26.51 0 48-21.49 48-48V176c0-26.51-21.49-48-48-48zm0 272H48V112h140.12l54.63 54.63c6 6 14.14 9.37 22.63 9.37H464v224z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Laser Cutting Machine<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.accteklaser.com\/laser-cleaning-machine\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-folder\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M464 128H272l-54.63-54.63c-6-6-14.14-9.37-22.63-9.37H48C21.49 64 0 85.49 0 112v288c0 26.51 21.49 48 48 48h416c26.51 0 48-21.49 48-48V176c0-26.51-21.49-48-48-48zm0 272H48V112h140.12l54.63 54.63c6 6 14.14 9.37 22.63 9.37H464v224z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Laser Cleaning Machine<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.accteklaser.com\/laser-welding-machine\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-folder\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M464 128H272l-54.63-54.63c-6-6-14.14-9.37-22.63-9.37H48C21.49 64 0 85.49 0 112v288c0 26.51 21.49 48 48 48h416c26.51 0 48-21.49 48-48V176c0-26.51-21.49-48-48-48zm0 272H48V112h140.12l54.63 54.63c6 6 14.14 9.37 22.63 9.37H464v224z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Laser Welding Machine<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.accteklaser.com\/laser-marking-machine\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-folder\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M464 128H272l-54.63-54.63c-6-6-14.14-9.37-22.63-9.37H48C21.49 64 0 85.49 0 112v288c0 26.51 21.49 48 48 48h416c26.51 0 48-21.49 48-48V176c0-26.51-21.49-48-48-48zm0 272H48V112h140.12l54.63 54.63c6 6 14.14 9.37 22.63 9.37H464v224z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Laser Marking Machine<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-644097b2 elementor-widget elementor-widget-heading\" data-id=\"644097b2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\">Contact information<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-63f956c elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"63f956c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-envelope\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M464 64H48C21.49 64 0 85.49 0 112v288c0 26.51 21.49 48 48 48h416c26.51 0 48-21.49 48-48V112c0-26.51-21.49-48-48-48zm0 48v40.805c-22.422 18.259-58.168 46.651-134.587 106.49-16.841 13.247-50.201 45.072-73.413 44.701-23.208.375-56.579-31.459-73.413-44.701C106.18 199.465 70.425 171.067 48 152.805V112h416zM48 400V214.398c22.914 18.251 55.409 43.862 104.938 82.646 21.857 17.205 60.134 55.186 103.062 54.955 42.717.231 80.509-37.199 103.053-54.947 49.528-38.783 82.032-64.401 104.947-82.653V400H48z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">manager@accteklaser.com<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fab-skype\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M424.7 299.8c2.9-14 4.7-28.9 4.7-43.8 0-113.5-91.9-205.3-205.3-205.3-14.9 0-29.7 1.7-43.8 4.7C161.3 40.7 137.7 32 112 32 50.2 32 0 82.2 0 144c0 25.7 8.7 49.3 23.3 68.2-2.9 14-4.7 28.9-4.7 43.8 0 113.5 91.9 205.3 205.3 205.3 14.9 0 29.7-1.7 43.8-4.7 19 14.6 42.6 23.3 68.2 23.3 61.8 0 112-50.2 112-112 .1-25.6-8.6-49.2-23.2-68.1zm-194.6 91.5c-65.6 0-120.5-29.2-120.5-65 0-16 9-30.6 29.5-30.6 31.2 0 34.1 44.9 88.1 44.9 25.7 0 42.3-11.4 42.3-26.3 0-18.7-16-21.6-42-28-62.5-15.4-117.8-22-117.8-87.2 0-59.2 58.6-81.1 109.1-81.1 55.1 0 110.8 21.9 110.8 55.4 0 16.9-11.4 31.8-30.3 31.8-28.3 0-29.2-33.5-75-33.5-25.7 0-42 7-42 22.5 0 19.8 20.8 21.8 69.1 33 41.4 9.3 90.7 26.8 90.7 77.6 0 59.1-57.1 86.5-112 86.5z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">manager@accteklaser.com<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fab-weixin\" viewBox=\"0 0 576 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M385.2 167.6c6.4 0 12.6.3 18.8 1.1C387.4 90.3 303.3 32 207.7 32 100.5 32 13 104.8 13 197.4c0 53.4 29.3 97.5 77.9 131.6l-19.3 58.6 68-34.1c24.4 4.8 43.8 9.7 68.2 9.7 6.2 0 12.1-.3 18.3-.8-4-12.9-6.2-26.6-6.2-40.8-.1-84.9 72.9-154 165.3-154zm-104.5-52.9c14.5 0 24.2 9.7 24.2 24.4 0 14.5-9.7 24.2-24.2 24.2-14.8 0-29.3-9.7-29.3-24.2.1-14.7 14.6-24.4 29.3-24.4zm-136.4 48.6c-14.5 0-29.3-9.7-29.3-24.2 0-14.8 14.8-24.4 29.3-24.4 14.8 0 24.4 9.7 24.4 24.4 0 14.6-9.6 24.2-24.4 24.2zM563 319.4c0-77.9-77.9-141.3-165.4-141.3-92.7 0-165.4 63.4-165.4 141.3S305 460.7 397.6 460.7c19.3 0 38.9-5.1 58.6-9.9l53.4 29.3-14.8-48.6C534 402.1 563 363.2 563 319.4zm-219.1-24.5c-9.7 0-19.3-9.7-19.3-19.6 0-9.7 9.7-19.3 19.3-19.3 14.8 0 24.4 9.7 24.4 19.3 0 10-9.7 19.6-24.4 19.6zm107.1 0c-9.7 0-19.3-9.7-19.3-19.6 0-9.7 9.7-19.3 19.3-19.3 14.5 0 24.4 9.7 24.4 19.3.1 10-9.9 19.6-24.4 19.6z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">+86-19963414011<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-map-marker-alt\" viewBox=\"0 0 384 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M172.268 501.67C26.97 291.031 0 269.413 0 192 0 85.961 85.961 0 192 0s192 85.961 192 192c0 77.413-26.97 99.031-172.268 309.67-9.535 13.774-29.93 13.773-39.464 0zM192 272c44.183 0 80-35.817 80-80s-35.817-80-80-80-80 35.817-80 80 35.817 80 80 80z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">No. 3 Zone A, Lunzhen Industrial Zone,Yucheng City , Shandong Province.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-116b8ebb elementor-widget elementor-widget-heading\" data-id=\"116b8ebb\" data-element_type=\"widget\" data-e-type=\"widget\" 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value=\"2a78e9a\"\/>\n\t\t\t<input type=\"hidden\" name=\"referer_title\" value=\"Blog - AccTek Laser\" \/>\n\n\t\t\t\t\t\t\t<input type=\"hidden\" name=\"queried_id\" value=\"28\"\/>\n\t\t\t\n\t\t\t<div class=\"elementor-form-fields-wrapper elementor-labels-above\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-name elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[name]\" id=\"form-field-name\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Name\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-email elementor-field-group elementor-column elementor-field-group-field_6d43db1 elementor-col-100 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"email\" name=\"form_fields[field_6d43db1]\" id=\"form-field-field_6d43db1\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Email*\" required=\"required\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-email elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[email]\" id=\"form-field-email\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Country\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-textarea elementor-field-group elementor-column elementor-field-group-message elementor-col-100\">\n\t\t\t\t\t<textarea class=\"elementor-field-textual elementor-field  elementor-size-sm\" name=\"form_fields[message]\" id=\"form-field-message\" rows=\"4\" placeholder=\"Message\"><\/textarea>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-group elementor-column elementor-field-type-submit elementor-col-100 e-form__buttons\">\n\t\t\t\t\t<button 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