激光技术2016，Vol.40Issue(1)：15-19,5.DOI:10.7510/jgjs.issn.1001-3806.2016.01.004
高功率光纤激光非熔透焊接5A06铝合金
Partial penetration welding of 5 A06 aluminum alloy with high power fiber laser
摘要
Abstract
In order to solve the problems such as the control of welding penetration , the loss of alloy element and weld surface quality in the process of partial penetration welding of 5A06 aluminum alloy with high power fiber laser , the effects of welding speed , defocusing amount , and lap plate gap on the quality of weld surface were studied by changing one of the welding parameters at fixed laser power and positive welding protective gas .The distribution rule of magnesium element was analyzed theoretically and verified experimentally .The test results show that weld hardness is consistent with the distribution of magnesium element.Due to the common effect of grain refinement and magnesium element diffusion of parent metal , the hardness near fusion line is greater than the other parts .The strength of laser partial penetration welding joint with optimized parameters is greater than the strength of arc riveting joint .When the clearance is 0.2mm, the strength of laser welding joint is highest and can reach 68.1%of the tensile strength of the parent material .The results are helpful to guide the partial penetration laser welding of aluminum alloy .关键词
激光技术/激光焊接/非熔透焊接/5A06铝合金Key words
laser technique/laser welding/partial penetration welding/5A06 aluminum alloy分类
矿业与冶金引用本文复制引用
陈根余,黎长邹,周聪,张焱,夏海龙..高功率光纤激光非熔透焊接5A06铝合金[J].激光技术,2016,40(1):15-19,5.基金项目
国家自然科学基金资助项目(51175165) （51175165）
湖南省自然科学基金资助项目(14JJ3057) （14JJ3057）
