期刊
SCRIPTA MATERIALIA
卷 62, 期 9, 页码 666-669出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2010.01.021
关键词
Magnesium alloy; Low-cycle fatigue; {10-12} twinning-detwinning; Initial {10-12} twin; Mean stress
类别
资金
- POSCO
- Korea Research Council of Fundamental Science and Technology (KRCF)
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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