MGH956合金在TIG焊接过程中焊缝气孔的仿真研究  

Simulation Research on Weld Porosity of MGH956 Alloy in TIG Welding Process

作　　者：肖红力[1] 

机构地区：[1]吉林省白城职业技术学院,吉林白城137000

出　　处：《铸造技术》2015年第3期738-740,共3页Foundry Technology

基　　金：吉林省社科联科学研究基金资助项目(JX2013085KX21)

摘　　要：对TIG焊接过程中MGH956合金焊缝气孔的分布以及形成机理进行研究,利用Matlab软件探究焊接工艺参数对焊缝气孔量的影响。计算机仿真及实验研究表明,TIG焊接过程中MGH956合金的焊缝气孔受到了母材制造工艺、纳米氧化物以及焊缝组织的影响。焊缝气孔倾向于链状分布在熔合线附近,合理的TIG焊接工艺参数可以改善MGH956合金的焊缝气孔量。The distribution and formation mechanism of welding porosities in MGH956 alloy in TIG welding process were studied, and the effects of welding parameters on weld porosity were explored based on Matlab software. The results show that the weld porosity of MGH956 alloy in TIG welding process is affected by the manufacturing processes of base material, nano-oxide and weld structure. Weld porosity tends to chain shape and distributes in the vicinity of the fusion line. Reasonable TIG welding process parameters can improve weld porosity volume of MGH956 alloys.

关 键 词：TIG焊接 MGH956合金 焊缝气孔 

分 类 号：TG444.74[金属学及工艺—焊接]