摘要
采用单丝、双丝MIG两种焊接工艺研究7A52铝合金焊缝抗拉强度和硬度分布以及平板对接产生的自由变形特点。结果显示:5A56、5356焊丝形成的焊缝强度低于母材;单、双丝焊缝截面硬度分布规律基本相同,但双丝焊较单丝焊热影响区减小1/3;单丝焊对接缝的自由变形远大于双丝焊。
Tensile strength, rigidity and free distortion of 7A52 aluminum alloy welded joint by single and twin wire MIG welding were studied. Tensile strength of joint by using 5A56/5356 filler is lower than that of base metal 7A52. Rigidity distribution of welded section by single and twin wire MIG welding is basically the same. Heat-affected zone （HAZ） and free distortion of twin wire MIG are less than that of single wire MIG.
出处
《兵器材料科学与工程》
CAS
CSCD
2009年第5期39-42,共4页
Ordnance Material Science and Engineering
关键词
单丝
MIG
双丝MIG
7A52铝合金
硬度
变形
single wire MIG welding
twin wire MIG welding
TA52 aluminum alloy
rigidity
distortion
