摘要
激光-电弧复合热源技术较单一热源焊接技术相比,具有热源能量密度梯度及热力耦合模式可优化设计等特点,成为实现关键零部件精确成形成性焊接制造的重要方法.文中以镁合金/钢为代表的难固溶不反应异质材料为研究对象,提出多组元液相共存的镁合金/钢激光-TIG电弧复合焊接新思路,利用激光-TIG电弧复合焊接热源所具有的能量密度梯度分布特征,通过添加Cu-Zn过渡层,实现镁合金/钢异种金属高质量熔化焊接,并对铝元素的作用进行了探讨.
Compared with single heat source,laser-TIG hybrid welding with the characteristic of optimum- designed heat source energy density and thermal-mechanical coupling mode is put to achieve precise forming and excellent properties in highend equipment welding. This paper focuses on realizing high quality fusion welding of magnesium alloy to steel with Cu-Zn interlayer by utilizing the gradient energy density characteristic of laser-TIG heat source. The new idea of multicomponent liquid phase coexistence is put forward in welding magnesium to steel by hybrid laser-TIG welding,meanwhile the effect of Al element is analysed in the welding.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2016年第5期69-72,132,共4页
Transactions of The China Welding Institution
基金
国家科技重大专项(2012zx04008031):大型船舶立体结构件成形及焊接装备
关键词
激光-电弧复合
异质材料
多组元液相
熔化焊
hybrid Laser-TIG
dissimilar metals
multicomponent liquid phase
fusion welding
