Strain-Rate Sensitivities of Different Deformation Mechanisms in AZ31B Magnesium Alloy Sheet at Various Temperatures

被引：4

作者：

Zhou, Guowei ^{[1
]}

Liu, Ruxue ^{[2
]}

Tang, Weiqin ^{[2
]}

Li, Dayong ^{[2
]}

Peng, Yinghong ^{[2
]}

Wu, Peidong ^{[3
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Naval Architecture Ocean & Civil Engn, Dept Engn Mech, Shanghai, Peoples R China

[2] Shanghai Jiao Tong Univ, State Key Lab Mech Syst & Vibrat, Shanghai, Peoples R China

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

来源：

JOM | 2021年 / 73卷 / 05期

基金：

中国国家自然科学基金; 加拿大自然科学与工程研究理事会;

关键词：

PLASTIC-DEFORMATION; TEXTURE EVOLUTION; ANISOTROPY; MICROSTRUCTURE; FLOW;

D O I：

10.1007/s11837-021-04609-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The evolutions of strain-rate sensitivity (SRS) in two slip modes, basal and prismatic in AZ31B alloy sheet, were studied at different temperatures with both experiments and simulations. With increasing deformation temperature, the AZ31B alloy sheet becomes more sensitive to strain rate under rolling direction tension. Meanwhile, the anisotropy (r-value) also presents a clearly increasing trend with loading rate at temperatures above 150 degrees C. Numerical simulation results based on crystal plasticity suggest that the difference in SRSs is responsible for the strain-rate dependence of the r-value at high temperatures, which may present different evolution trends with temperature. The effects of strain rate on slip-mode activities and texture evolution are also further analyzed.

引用

页码：1419 / 1427

页数：9

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