Modeling of {10-12}-{10-12} secondary twinning in pre-compressed Mg alloy AZ31

JOURNAL OF ALLOYS AND COMPOUNDS

卷:725

Article

Qiao, H.¹  Guo, X. Q.²  Hong, S. G.³  Wu, P. D.¹ 

[1] McMaster Univ, Dept Mech Engn, Hamilton, ON L8S 4L7, Canada

[2] China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, Jiangsu, Peoples R China

[3] Korea Res Inst Stand & Sci, Div Ind Metrol, Daejeon 305340, South Korea

关键词: Twinning;    Texture evolution;    Crystal plasticity;    Magnesium alloy;   

DOI  :  10.1016/j.jallcom.2017.07.133

来源: Elsevier

【 摘 要 】

The deformation characteristics of rolled Mg alloy AZ31, which was previously compressed along the rolling direction and then re-compressed along the transverse direction, have been numerically investigated. Secondary/double twinning is allowed in the current EVPSC-TDT model, and {10-12}-{10-12} secondary twinning is found to play an important role in reproducing the experimental data. The deformation behavior of the pre-compressed materials associated with primary and secondary twining has been interpreted in terms of the predicted activities, twin volume fractions and texture evolutions. The {10-12}-{10-12} secondary twinning in the previously twinned region is most active for the 9% pre-compressed material while primary twinning within the residual un-twinned domain dominates twinning behavior for the 3% pre-compressed material. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

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