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Improved ductility of aged Mg-9Al-1Zn alloy strip by electropulsing treatment

Published online by Cambridge University Press:  31 January 2011

Yanbin Jiang ,
Guoyi Tang ,
Chanhung Shek ,
Yaohua Zhu ,
Lei Guan ,
Shaonan Wang  and
Zhuohui Xu
Yanbin Jiang
Affiliation:
Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, People’s Republic of China; and Department of Physics and Materials Science, City University of Hong Kong, Kowloon Tong, Hong Kong
Guoyi Tang*
Affiliation:
Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, People’s Republic of China
Chanhung Shek
Affiliation:
Department of Physics and Materials Science, City University of Hong Kong, Kowloon Tong, Hong Kong
Yaohua Zhu
Affiliation:
Department of Industrial and Systems Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong
Zhuohui Xu
Affiliation:
Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, People’s Republic of China
*
a) Address all correspondence to this author. e-mail: tanggy@mail.tsinghua.edu.cn
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Abstract

The effect of electropulsing treatment (EPT) on the microstructure and mechanical properties of aged Mg-9Al-1Zn alloy strip was studied. EPT was found to accelerate tremendously the β phase spheroidization in the aged Mg-9Al-1Zn alloy. This improved microstructure exhibits excellent mechanical properties, that is, increasing elongation to failure significantly without loss of tensile strength. The spheroidization of the β phase during EPT was attributed to the reduction of the nucleation thermodynamic barrier and enhancement of atomic diffusion.

Keywords

ElectromigrationMgMicrostructure
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 5 , May 2009 , pp. 1810 - 1814
Copyright
Copyright © Materials Research Society 2009

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