Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering

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Effects of Cu-Zn alloy additions on microstructure and strength of welded joints between magnesium alloy and mild steel

Authors
Xu Jiang, Hengxing Yu, Qinghua Lin, Rongzheng Xu
Corresponding Author
Xu Jiang
Available Online April 2015.
DOI
10.2991/meic-15.2015.140How to use a DOI?
Keywords
Mg alloy; steel;welding style; interface
Abstract

Experimental investigations on lap welding of magnesium alloy to steel using resistance spot welding with Cu-Zn alloy interlayer are carried out. The effect of welding time, welding current and interlayer thickness on the bonding mode of interface and joint strength has been investigated using mechanical testing and metallurgical examination. The results show that the strength of Mg-steel joints without an interlayer could reach 30 MPa by the optimization of welding current and time. The addition of alloy elements, realized by adjustment of interlayer thickness, has a noticeable effect on mechanical properties and microstructure of the joints. Particularly, with the addition of Cu-Zn interlayer (0.1 mm in thickness), the tensile strength could attain 62 MPa. Owning to the addition of the Cu-Zn alloy interlayer, a metallurgical bonding between Mg alloy and steel is achieved based on the formation of intermetallic compounds of CuMgZn and solid solutions of Cu in Fe. In addition, the formation of pores at the interface of Mg alloy and steel is adverse for the strength improvement of joints.

Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering
Series
Advances in Engineering Research
Publication Date
April 2015
ISBN
978-94-62520-62-2
ISSN
2352-5401
DOI
10.2991/meic-15.2015.140How to use a DOI?
Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

risenwbib
TY  - CONF
AU  - Xu Jiang
AU  - Hengxing Yu
AU  - Qinghua Lin
AU  - Rongzheng Xu
PY  - 2015/04
DA  - 2015/04
TI  - Effects of Cu-Zn alloy additions on microstructure and strength of welded joints between magnesium alloy and mild steel
BT  - Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering
PB  - Atlantis Press
SP  - 616
EP  - 619
SN  - 2352-5401
UR  - https://doi.org/10.2991/meic-15.2015.140
DO  - 10.2991/meic-15.2015.140
ID  - Jiang2015/04
ER  -