铝合金搅拌摩擦焊对搭接接头Hook缺陷研究  

Investigation on Hook Defect of Butt-Overlap Joint of Aluminum Alloy by Friction Stir Welding

作　　者：吴志明[1] 吴坚定 马正斌[2] 陈巍[2] 董春林[2] 栾国红[2] 

机构地区：[1]南车株洲电力机车有限公司 [2]中航工业北京航空制造工程研究所

出　　处：《航空制造技术》2014年第16期57-60,64,共5页Aeronautical Manufacturing Technology

摘　　要：对厚度为16mm与20mm的6082铝合金对搭接接头进行搅拌摩擦焊接试验，结果表明，对搭接接头搅拌摩擦焊接工艺参数可调范围较宽，搅拌头旋转速度在300～600r／min及焊接速度在60～200mm／min条件下，能够获得完整无缺陷的焊接接头。搭接面处于前进侧时，Hook缺陷向上偏转，角度大于90°；搭接面处于后退侧时，Hook缺陷向下偏转，角度小于45°。The butt-overlap joint of 6082 aluminum alloy by friction stir welding is investigated. The results show that defect-free joint can be obtained using different rotation speeds （300-600r/min） and different welding speeds （60-200mm/min）. When the overlap region is in AS, Hook defect deflects towards the weld surface with a larger angle （〉90°）. However, when the overlap region is in RS, Hook defect deflects towards the weld foot with a smaller angle （〉45°）.

关 键 词：搅拌摩擦焊 对搭接接头 Hook缺陷 材料流动 

分 类 号：TG453.9[金属学及工艺—焊接]