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个人信息Personal Information
副教授
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:机械工程学院
学科:车辆工程
办公地点:大连理工大学,汽车学院实验室A307
电子邮箱:rendx@dlut.edu.cn
Interface microstructure and mechanical properties of arc spot welding Mg-steel dissimilar joint with Cu interlayer
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论文类型:期刊论文
发表时间:2014-07-01
发表刊物:MATERIALS & DESIGN
收录刊物:SCIE、EI
卷号:59
页面范围:369-376
ISSN号:0261-3069
关键字:Ferrous metals and alloys; Welding; Microstructure
摘要:A novel technology was developed for the arc spot welding of AZ31 Mg alloy to Q235 steel with Cu as interlayer. The mechanisms of bonding dissimilar materials were investigated using mechanical and metallurgical examinations. Results show that the joining of Mg alloy to steel with Cu involved two bonding mechanisms: weld-brazing by the Cu transition layer at the interface edge and bonding by a micron-scale composite transition layer of Al3Cu4Fe3 and Fe4Cu3 intermetallic phases at the interface center. The additional reaction of Cu increased the reaction temperature and composition ranges at the interface. It also elicited a bridge effect that improved the weldability of Mg alloy and steel by new formed phases. (C) 2014 Elsevier Ltd. All rights reserved.