A novel weld-bonding hybrid process for joining Mg alloy and Al alloy

被引：37

作者：

Liu, Liming ^{[1
]}

Ren, Daxin ^{[1
]}

机构：

[1] Dalian Univ Technol, Key Lab Liaoning Adv Welding & Joining Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China

来源：

MATERIALS & DESIGN | 2011年 / 32卷 / 07期

关键词：

Welding; Microstructure; Destructive testing; SPECTRAL-ANALYSIS; ALUMINUM-ALLOY; MAGNESIUM; MICROSTRUCTURE; INTERFACE; AZ31B; STRENGTH; PLASMA;

D O I：

10.1016/j.matdes.2011.03.050

中图分类号：

T [工业技术];

学科分类号：

08 ;

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.

引用

页码：3730 / 3735

页数：6

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