Effect of antimony on microstructure and performance of AZ31 magnesium alloy welded joint

被引：0
|
作者：
董长富
刘黎明
高洪吾
刘多
机构：
[1] Ion and Electronic Beams
[2] State Key Laboratory of Material Surface Modification by Laser
[3] Material Department of Engineering
[4] Harbin Institute of Technology
[5] Dalian University of Technology
[6] Harbin
来源：
China Welding | 2005年 / 01期
关键词：
antimony; filler wire; magnesium alloy;
D O I：
暂无
中图分类号：
TG457.1 [金属材料的焊接];
学科分类号：
摘要：
Automatic gas tungsten arc （GTA） welding has been utilized to connect AZ31 magnesium alloy butted plates with AZ61 and AZ61-1.0Sb filler wire. Contrasted to AZ61 filler wire, the AZ61-1.0Sb filler wire holds a component of 1wt% antimony （Sb）. In the present work, proper welding technology parameters were explored. And the microstructure and performance of welded joints were analyzed to research the influence of Sb on magnesium alloy welded joint. Observed from the microstructure of welded joint, addition of Sb has refined crystal grains and changed the pattern of eutectic in bead and heat-affected zone （HAZ） adjacent to bead from discontinuous reticular to graininess structure, which strengthen the weakness of joint. In addition, because of the anchoring action of Mg3Sb2 phases as well as hampering action to crystal boundary slip, the performance of joint welded by AZ61-1.0Sb filler wire has been improved.
引用
收藏
页码：44 / 47
页数：4
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