Journal
SCRIPTA MATERIALIA
Volume 62, Issue 9, Pages 666-669Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2010.01.021
Keywords
Magnesium alloy; Low-cycle fatigue; {10-12} twinning-detwinning; Initial {10-12} twin; Mean stress
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Funding
- POSCO
- Korea Research Council of Fundamental Science and Technology (KRCF)
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Initial {1 0 -1 2} twin influenced the plastic deformation mechanism activated during fatigue deformation, especially during compressive loading, by enhancing the activity of the detwinning mechanism. With the aid of initial {1 0 -1 2} twin, compressive deformation could be fully accommodated by detwinning alone. This change in the predominant plastic deformation mechanism during compressive loading significantly decreased compressive flow stress, causing an increase in mean stress, and thus deteriorated the fatigue resistance of the material. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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