MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Effects of Dynamic Electropulsing on Phase Transformation of a Zn-Al Based Alloy
S. ToY. H. ZhuW. B. LeeG. Y. TangX. M. LiuY. B. Jiang
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2009 Volume 50 Issue 5 Pages 1105-1112

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Abstract

The effects of dynamic electropulsing on phase transformations of the ZA22 alloy were studied during tensile deformation, by using scanning electron microscopy, X-ray diffraction and transmission electron microscopy. It was found that electopulsing accelerated tremendously phase transformation in two stages, sequentially: (a) quenching from supersaturated state approaching the final stable state, and (b) up-quenching from the final stable state to a higher temperature state. The relationship between plasticity and the dynamic electropulsing is discussed from the point of view of Gibbs free energy, phase transformation and microstructual changes.

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© 2009 The Japan Institute of Metals and Materials
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