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个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:哈尔滨工业大学
学位:博士
所在单位:材料科学与工程学院
电子邮箱:liulm@dlut.edu.cn
A novel weld-bonding hybrid process for joining Mg alloy and Al alloy
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论文类型:期刊论文
发表时间:2011-08-01
发表刊物:MATERIALS & DESIGN
收录刊物:SCIE、EI
卷号:32
期号:7
页面范围:3730-3735
ISSN号:0261-3069
关键字:Welding; Microstructure; Destructive testing
摘要:A novel weld-bonding hybrid process is carried out to join Mg alloy and Al alloy, and the technology combines a modified metal inert gas (MIG) spot welding process with adhesive bonding. The Mg base metal and the fusion zone are metallurgical connected by an Al-Mg transition layer with the thickness of 30-60 mu m. Single nugget of spot welded joint can offer high shear strength of 130 MPa, which reach 81% of that of Mg base metal. The increased strength is due to the intermetallic layer being formed at the region with low stress, so the joint fractures in an Al-rich dendritic region. Superior mechanical properties can be obtained by weld bonded joint, benefiting from the advantages of both welding and adhesive bonding. (C) 2011 Elsevier Ltd. All rights reserved.