Factors influencing the shearing patterns in equal-channel angular pressing

被引：229

作者：

Furukawa, M

Horita, Z

Langdon, TG ^{[1
]}

机构：

[1] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA

[2] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA

[3] Fukuoka Univ Educ, Dept Technol, Fukuoka 8114192, Japan

[4] Kyushu Univ, Fac Engn, Dept Mat Sci & Engn, Fukuoka 8128581, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2002年 / 332卷 / 1-2期

关键词：

equal-channel angular pressing; metal processing; severe plastic deformation; shearing;

D O I：

10.1016/S0921-5093(01)01716-6

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The shearing patterns are calculated for equal-channel angular pressing (ECAP) under three different conditions: (i) rotation of a sample around the X-axis when using a die angle of 90degrees. (ii) rotation around the X-axis when using a die angle of 120degrees and (iii) rotation around the Y- and Z-axes when using plate samples with a die angle of 90degrees. Separate sets of shearing patterns are constructed for the four standard processing routes: route A with no rotation of the sample between consecutive passes, routes B-A and B-C with rotations of 90degrees in alternate directions or the same direction between each pass, and route C with a rotation of 180degrees between passes. It is concluded that the development of a uniform microstructure of equiaxed grains, separated by high-angle grain boundaries, is favored using route B-C because (i) shearing occurs over large angular ranges on the three orthogonal planes within the sample, (ii) there is a regular and periodic restoration of an equiaxed structure during consecutive pressings and (iii) deformation occurs on each orthogonal plane. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：97 / 109

页数：13

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