刘黎明

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

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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.