MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Deformation and Anelastic Recovery of Pure Magnesium and AZ31B Alloy Investigated by AE
Yunping LiManabu Enoki
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2007 Volume 48 Issue 9 Pages 2343-2348

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Abstract

Extruded pure magnesium and AZ31B alloy were compressed parallel and vertical to extrusion direction. Deformation behavior was investigated in monotonous compression by acoustic emission (AE). Anelastic recovery behavior was observed in cyclic compression-quick unloading-recovery process. AE method was applied in each recovery process to investigate detwinning behavior at different strain levels. It was found that twinned samples vertically compressed easily detwin compared to parallel samples in both pure magnesium and AZ31B alloy. Compared to pure magnesium, twinning in AZ31B alloy is more stable and shows weaker psuedoelasticity. A model of strain dependence on cumulative AE counts from detwinning was proposed and fitting results are in good agreement with experimental data.

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© 2007 The Japan Institute of Metals and Materials
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