Journal
SCRIPTA MATERIALIA
Volume 67, Issue 2, Pages 165-168Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2012.04.007
Keywords
Magnesium alloy; Plastic deformation; Twinning; Detwinning; Work hardening
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Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Premier's Research Excellence Award (PREA)
- NSERC-DAS Award
- AUT021 Network of Centers of Excellence
- Ryerson Research Chair program
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The plastic deformation of an extruded Mg-Al-Mn (AM30) magnesium alloy in the extrusion direction by compression can be characterized by three distinct stages. Twinning was observed in stage A with a decreasing strain-hardening rate. Detwinning occurred due to strong twin-dislocation interactions in stage B, which was represented by an increasing strain-hardening rate over an extended strain range. Stage C with a decreasing strain-hardening rate was due to a reducing resistance of fewer twins to the dislocation slip. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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