Modeling of large strain hardening during grain refinement

被引：28
作者：
Gu, C. F. [1 ]
Toth, L. S. [2 ]
Beausir, B. [2 ,3 ]
机构：
[1] Monash Univ, Dept Mat Engn, Clayton, Vic 3800, Australia
[2] UPV Metz, CNRS UMR 7239, LEM3, F-57045 Metz 1, France
[3] Tech Univ Dresden, Inst Strukturphys, D-01062 Dresden, Germany
来源：
SCRIPTA MATERIALIA | 2012年 / 66卷 / 05期
关键词：
Strain hardening; Geometrically necessary dislocation; OFHC copper; Simple shear; Grain refinement modeling; ANGULAR PRESSED COPPER; DISLOCATION-STRUCTURES; DEFORMATION; DISORIENTATIONS;
D O I：
10.1016/j.scriptamat.2011.11.002
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Strain hardening was modeled at large strains taking into account the geometrically necessary dislocations (GNDs) with the help of a recent grain refinement model. The GND density was studied experimentally with orientation imagining for oxygen-free high-conductivity copper deformed in equal channel angular pressing and in simple shear to the same equivalent strain. The results show that the GND density can be predicted fairly well by the model in accord with experiments, and also affects stage IV hardening. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：250 / 253
页数：4
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