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Effect of electropulsing treatment on solid solution behavior of an aged Mg alloy AZ61 strip

Published online by Cambridge University Press:  31 January 2011

Yanbin Jiang ,
Guoyi Tang ,
Lei Guan ,
Shaonan Wang ,
Zhuohui Xu ,
Chanhung Shek  and
Yaohua Zhu
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
Lei Guan
Affiliation:
Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, People’s Republic of China
Shaonan Wang
Affiliation:
Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, People’s Republic of China
Zhuohui Xu
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
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

The effect of electropulsing treatment (EPT) on the solution behavior of aged Mg alloy AZ61 strip was investigated using scanning electron microscope (SEM) and x-ray diffraction (XRD). It was found that EPT accelerated tremendously the dissolution of β phase into α matrix in an aged Mg alloy AZ61 strip. The dissolution of β phase took place in less than 4 s at relatively low temperature under EPT, compared with that in conventional heat treatment. A mechanism for rapid solid solution process during EPT was proposed based on the coupling of the thermal and athermal effects. The results in this investigation indicated that EPT played an important role in the nonequilibrium microstructural evolution in the alloy. It is supposed that EPT can provide a highly efficient approach for solid solution treatment of the alloy.

Keywords

ElectromigrationMgPhase transformation
Type
Articles
Information
Journal of Materials Research , Volume 23 , Issue 10 , October 2008 , pp. 2685 - 2691
Copyright
Copyright © Materials Research Society 2008

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