期刊
SCRIPTA MATERIALIA
卷 63, 期 7, 页码 737-740出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2010.05.047
关键词
CRSS; Slip; Plastic deformation; Magnesium
类别
资金
- Deakin University
- ARC Centre of Excellence for Design in Light Metals
Critical resolved shear stresses (CRSSs) for slip on different types of slip systems in single-crystal hexagonal close-packed metals show very wide variations. Values derived from measurements and modelling on polycrystals show much less variability and there is often evidence for activation of hard slip modes from dislocation observations in transmission electron microscopy. We show that this discrepancy originates in the hardening processes that take place in polycrystals, which must be treated as a term that is additive to the true CRSS. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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