薄壁6061铝合金TIG焊接结构强度研究  

Research on Structural Strength of 6061 Aluminum Alloy Welded by TIG

作　　者：于庆峰[1] 冯全科[1] 王士元[2] 

机构地区：[1]西安交通大学能源与动力工程学院 [2]西安交通大学焊接研究所,陕西西安710049

出　　处：《热加工工艺》2006年第7期4-5,共2页Hot Working Technology

基　　金：国家自然科学基金资助项目(10375046)

摘　　要：焊缝强度是影响薄壁承压容器整体强度的关键因素,为研究保证其焊缝强度的焊接及热处理工艺路线,采用TIG方法对薄壁6061铝合金材料进行了焊接,焊后采用了固溶加人工时效的热处理方式。通过拉伸试验对焊缝的强度进行研究,确定了合适的焊接参数和热处理工艺,分析了焊缝缺陷的产生原因和解决办法。The welded joint strength of thin-skinned pressure vessel acts as critical factor of its pressure proof. To study technics of welding and heat treatment for ensuring strength of welded joint in it, 6061 aluminum alloy plates were welded by TIG. And then heat treatment is applied to the plates with ＂solution treatment ＋ artificial aging＂. Tensile tests were used to verify the strength of welded joint. Feasible parameters of TIG and heat treatment were confirmed by the tests. The cause of weld defect and the countermeasure are mentioned in this paper.

关 键 词：TIG 6061铝合金 焊缝 强度 拉伸试验 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG444.74[金属学及工艺—金属材料]