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Static electropulsing-induced phase transformations of a cold-deformed ZA27 alloy

Published online by Cambridge University Press:  26 July 2011

Yaohua Zhu ,
Suet To ,
Xianming Liu ,
Guoliang Hu  and
Qing Xu
Yaohua Zhu*
Affiliation:
State Key Laboratory in Ultra-precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong 852, People’s Republic of China
Suet To*
Affiliation:
State Key Laboratory in Ultra-precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong 852, People’s Republic of China
Xianming Liu
Affiliation:
Hefei National Laboratory for Physical Science at Microscale, University of Science and Technology of China, Hefei 230026, People’s Republic of China
Guoliang Hu
Affiliation:
Graduate School at Shenzhen, Tsinghua University, Guangdong 518055, People’s Republic of China
Qing Xu
Affiliation:
Graduate School at Shenzhen, Tsinghua University, Guangdong 518055, People’s Republic of China
*
a)Address all correspondence to these authors. e-mail: yaohuazhu@hotmail.com
b)e-mail: mfsto@inet.polyu.edu.hk
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Abstract

Static electropulsing-induced phase transformations of a cold-drawn ZA27 alloy wire were studied by using x-ray diffraction, backscattered scanning electron microscopy, and electron backscattered diffraction (EBSD) techniques. By using EBSD, phases with close microstructure are discriminated, based on transmission electron microscopy determined lattice parameters of phases. Thus, it was quantitatively detected that electropulsing tremendously accelerated phase transformations in two stages: (i) η′S and ε′T decomposed sequentially (in a way of quenching) and (ii) ε′T and η′S formed via reverse decompositions (in a way of up-quenching).

Keywords

AlloyElectromigrationPhase transformation

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Type
Articles
Information
Journal of Materials Research , Volume 26 , Issue 14 , 28 July 2011 , pp. 1696 - 1701
Copyright
Copyright © Materials Research Society 2011

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References

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