In-situ neutron diffraction investigation on twinning/detwinning activities during tension-compression load reversal in a twinning induced plasticity steel

被引：31
|
作者：
Xie, Q. [1 ]
Chen, Y. [1 ]
Yang, P. [2 ]
Zhao, Z. [3 ]
Wang, Y. D. [4 ]
An, K. [1 ]
机构：
[1] Oak Ridge Natl Lab, Neutron Scattering Div, Oak Ridge, TN 37831 USA
[2] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
[3] Univ Sci & Technol Beijing, Collaborat Innovat Ctr Steel Technol, Beijing 100083, Peoples R China
[4] Univ Sci & Technol Beijing, SKLAMM, Beijing 100083, Peoples R China
来源：
SCRIPTA MATERIALIA | 2018年 / 150卷
关键词：
TWIP; Grain orientation dependence; Stacking fault probability; Tension-compression asymmetry; Detwinning; STRAIN-HARDENING BEHAVIOR; MN TWIP STEEL; GRAIN-ORIENTATION; MECHANICAL-PROPERTIES; DEFORMATION TEXTURE; MANGANESE STEEL; AL; DEPENDENCE; ALLOYS; MODEL;
D O I：
10.1016/j.scriptamat.2018.03.017
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The tension-compression type of load reversal produces an asymmetric cyclic tension-compression behavior and varied yielding stresses in the subsequent monotonic tension and compression in a twinning induced plasticity steel. The micromechanical behavior was elucidated via the evolutions of the stacking fault probability and the grain orientation density captured by in-situ neutron diffraction. The latter indicates more profound detwinning activities in a reversal from tension to compression than those from compression to tension and more twinning involves in monotonic tension than in compression. This is confirmed by the calculated twinning activities in monotonic tension and compression using the visco-plastic self-consistent model. (C) 2018 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：168 / 172
页数：5
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