Effect of Pre-Straining on the Evolution of Material Anisotropy in Rolled Magnesium Alloy AZ31 Sheet

被引：0
作者：
Qiao, H. [1 ]
Guo, X. Q. [1 ]
Wu, P. D. [1 ]
机构：
[1] McMaster Univ, Dept Mech Engn, Hamilton, ON L8S 4L7, Canada
来源：
NUMISHEET 2014: THE 9TH INTERNATIONAL CONFERENCE AND WORKSHOP ON NUMERICAL SIMULATION OF 3D SHEET METAL FORMING PROCESSES: PART A BENCHMARK PROBLEMS AND RESULTS AND PART B GENERAL PAPERS | 2013年 / 1567卷
关键词：
crystal plasticity; self-consistent; texture; anisotropy; magnesium; HARDENING EVOLUTION; DEFORMATION; BEHAVIOR; TEXTURE; TWINS;
D O I：
10.1063/1.4850015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The large strain Elastic Visco-Plastic Self-Consistent (EVPSC) model and the recently developed Twinning and De-Twinning (TDT) model are applied to study the mechanical behavior of rolled magnesium alloy AZ31 sheet. Three different specimen orientations with tilt angles of 0 degrees, 45 degrees and 90 degrees between the rolling direction and longitudinal specimen axis are used to study the mechanical anisotropy under both uniaxial tension and compression. The effect of pre-strain in uniaxial compression along the rolling direction on subsequent uniaxial tension/compression along the three directions is also investigated. It is demonstrated that the twinning during pre-strain in compression and the detwinning in the subsequent deformation have a significant influence on the mechanical anisotropy. Numerical results are in good agreement with the experimental observations found in the literature.
引用
收藏
页码：468 / 473
页数：6
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