铝合金搅拌摩擦焊焊接过程缺陷分析  

Analysis of Defects in Friction Stir Welding of Aluminum Alloy

作　　者：王磊[1] 谢里阳[1] 李兵[1] 

机构地区：[1]东北大学机械工程与自动化学院,沈阳110004

出　　处：《机械制造》2008年第2期5-9,共5页Machinery

基　　金：辽宁省科技攻关项目(编号:2006220025)

摘　　要：搅拌摩擦焊虽然能够避免熔焊过程中产生的缺陷,但若工艺参数选择不当,也会引入新的缺陷,包括隧道型、孔洞和沟槽、飞边、Z线与界线、吻接、摩擦面、背部等缺陷。在大量试验的基础上,总结了国内外搅拌摩擦焊焊接过程中出现过的缺陷种类,分析了缺陷产生的原因及其危害,提出了避免缺陷产生的方法,对生产实践具有一定指导作用。但是关于搅拌摩擦焊焊接过程中缺陷的形成机理还有待更深入的研究。Application of friction stir welding can avoid the defects arising in fusion welding. However, new defects will appear if improper parameters are adopted, including tunnel defect, hole and groove defect, fin defect, zigzag line and boundary, kiss bonding, faying surface, etc. Based on a great number of tests, the varieties of defects arising in friction stir welding process at home and abroad are summed up, the causes and hazards of the defects analyzed and the methods to avoid the defects provided. More attention should be focused on the forming mechanism of defects in friction stir welding.

关 键 词：搅拌摩擦焊 缺陷 隧道 Z线 吻接 

分 类 号：TG441[金属学及工艺—焊接]