Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 555, Issue -, Pages 93-98Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2012.06.038
Keywords
Crystal plasticity; Twinning; Slip; Magnesium alloy
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Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Ontario Ministry of Research and Innovation
- US Department of Energy, Office of Basic Energy Sciences [FWP-06SCPE401]
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A new constitutive model to describe twinning and detwinning for polycrystalline materials with the hexagonal close packed (HCP) crystallographic structure is developed and implemented in the recently developed elastic viscoplastic self-consistent (EVPSC) polycrystal model. The new model is then applied to magnesium alloy Mg-3 Al-1 Zn (AZ31B) sheet under cyclic loadings and strain path changes. It is demonstrated that the new twinning model is able to capture key features associated with twinning and detwinning observed experimentally. (C) 2012 Elsevier B.V. All rights reserved.
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