A crystal-plasticity finite element method study on effect of abnormally large grain on mesoscopic plasticity of polycrystal

被引：4
|
作者：
Choi, Yoon Suk [1 ]
Parthasarathy, Triplicane A. [1 ]
机构：
[1] Universal Energy Syst Inc, Dayton, OH 45432 USA
来源：
SCRIPTA MATERIALIA | 2012年 / 66卷 / 01期
关键词：
Crystal plasticity; Finite element method; Mesoscopic plasticity; Abnormally large grain; As-large-as grain; FATIGUE;
D O I：
10.1016/j.scriptamat.2011.10.006
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In order to investigate the effect of an abnormally large grain on plastic responses of polycrystal, elasto-viscoplastic crystal plasticity finite element simulations were performed using synthetic three-dimensional microstructures with and without an abnormally large grain. The results indicated that the abnormally large grain could be an important feature in causing instability of mesoscopic plasticity by drawing hot spots of plastic shear. In particular, the maximum slip system shear hot spots are pronounced in the presence of the abnormally large grain oriented in single slip. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：56 / 59
页数：4
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