7020铝合金MIG焊后超声消应处理研究  

Ultrasonic Stress Relieving of 7020 Aluminium-Alloy MIG Welded Joint

作　　者：刘国栋[1] 郭小辉[2] 

机构地区：[1]海军驻上海地区舰炮系统军事代表室,上海200439 [2]中国船舶重工集团公司第七二五研究所,河南洛阳471023

出　　处：《材料开发与应用》2013年第5期25-28,共4页Development and Application of Materials

摘　　要：研究了16mm厚7020铝合金板的熔化极气体保护焊焊接工艺,对焊后试板进行超声冲击消应处理,研究了超声消应前后焊缝残余应力的变化。试验表明,7020铝合金采用熔化极气体保护焊焊接,焊后进行超声消应处理,可有效改善焊缝的残余应力。This paper deals with metal inert gas welding technics of 7020 aluminium alloy plate with 16mm thickness. The proper welding parameter was determined and ultrasonic treatment to relieve the welding residual stress was conducted. The results show that with ultrasonic peening,the welding residual stress of 7020 aluminium alloy MIG welded joints were relieved.

关 键 词：铝合金 熔化极气体保护焊 超声冲击 残余应力 

分 类 号：TG441.8[金属学及工艺—焊接]