Investigation on the geometrical aspect of deformation during equal-channel angular pressing by in-situ physical modeling experiments

被引：24
作者：
Han, W. Z. [1 ]
Zhang, Z. F. [1 ]
Wu, S. D. [1 ]
Li, Sx [1 ]
机构：
[1] Chinese Acad Sci, Met Res Inst, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 476卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
deformation mechanism; equal-channel angular pressing (ECAP); physical modeling; deformation zone; flow line field;
D O I：
10.1016/j.msea.2007.04.114
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The deformation mechanism of equal-channel angular pressing (ECAP) was investigated by in-situ physical modeling experiment, in which the billet consisting of two kinds of color grains with designed patterns was pressed through an ECAP die made of a transparent plexiglass. It was found that the evolution of the flow patterns was governed by the geometric character of ECAP die, and a deformation zone with a sector shape was formed in billet during the experiments. Based on the observations in the in-situ physical modeling experiment, a simple flow line field and the corresponding geometrical aspect of shear deformation were proposed. (c) 2007 Published by Elsevier B.V.
引用
收藏
页码：224 / 229
页数：6
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