Three-dimensional analysis of plastic flow during high-pressure torsion

被引：25
|
作者：
Figueiredo, Roberto B. [1 ]
de Faria, Gustavo C. V. [2 ]
Cetlin, Paulo R. [2 ]
Langdon, Terence G. [3 ,4 ,5 ]
机构：
[1] Univ Fed Minas Gerais, Dept Mat Engn & Civil Construct, BR-31270901 Belo Horizonte, MG, Brazil
[2] Univ Fed Minas Gerais, Dept Mech Engn, BR-31270901 Belo Horizonte, MG, Brazil
[3] Univ Southampton, Fac Engn & Environm, Mat Res Grp, Southampton SO17 1BJ, Hants, England
[4] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA
[5] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA
来源：
JOURNAL OF MATERIALS SCIENCE | 2013年 / 48卷 / 13期
基金：
欧洲研究理事会;
关键词：
FINITE-ELEMENT-ANALYSIS; MICROSTRUCTURAL EVOLUTION; DEFORMATION-BEHAVIOR; GRAIN-REFINEMENT; HOMOGENEITY; TEMPERATURE; ALUMINUM; EXAMINE; ZONE;
D O I：
10.1007/s10853-012-6979-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The use of imposed plastic deformation as a single parameter to compare results of samples processed by severe plastic deformation is not always accurate. Therefore, this report describes the theoretical plastic flow occurring during high-pressure torsion and presents finite element modeling of this technique to complement the theory. The results demonstrate the influence on plastic flow of the material behavior, the sample aspect ratio, the processing pressure, and the contact friction between the sample and the anvil. It is shown that heterogeneous flow is primarily observed near the edges of the samples. The present results are in general agreement with published experimental observations.
引用
收藏
页码：4524 / 4532
页数：9
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