A crystal plasticity-based explanation for the dependencies of grain refinement on processing route and die angle in equal channel angular extrusion

被引：7
作者：
Li, Saiyi [1 ]
机构：
[1] S China Univ Technol, Sch Mech Engn, Guangzhou 510640, Peoples R China
来源：
SCRIPTA MATERIALIA | 2009年 / 60卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Equal channel angular extrusion; Grain refinement; Crystal plasticity; Severe plastic deformation; Strain path; TEXTURE EVOLUTION; MICROSTRUCTURE; COPPER; STRAIN;
D O I：
10.1016/j.scriptamat.2008.12.048
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
An explanation for the relative effectiveness of grain refinement in equal channel angular extrusion is proposed based on crystal plasticity simulations. It is shown that the processing route and die angle have significant influences on the characteristics of slip activities at pass-to-pass transitions. A higher efficiency of grain refinement by the experimentally recognized optimum route is attributed to a higher contribution from newly activated slip systems at the transitions. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：706 / 709
页数：4
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