Microstructural modelling of equal channel angular pressing for producing ultrafine grained materials

被引：52

作者：

Kim, HS ^{[1
]}

Estrin, Y

机构：

[1] Chungnam Natl Univ, Dept Met Engn, Taejon 305764, South Korea

[2] Clausthal Univ Technol, Inst Mat Sci & Technol, D-38678 Clausthal Zellerfeld, Germany

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2005年 / 410卷

关键词：

equal channel angular pressing; severe plastic deformation; dislocation cell model; microstructure evolution; finite element analysis; visioplasticity;

D O I：

10.1016/j.msea.2005.08.047

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The evolution of microstructure and the mechanical properties of equal channel angular pressing (ECAP) processed materials depend on the plastic deformation behavior during ECAP, which is governed mainly by the die geometry, the constitutive behavior of the material itself and the processing conditions. In this study, we describe some of our results of continuum modelling and microstructural modelling of ECAP in order to illustrate the capabilities of the models. In particular, results of modelling ECAP using analytical and finite element methods in combination with visioplasticity experiments are presented for various geometric and processing conditions. The non-homogeneous deformation is accounted form terms of the strain hardening properties of the material. Finally, modelling the evolution of microstructural features of misorientation angle using a dislocation cell model during ECAP is presented. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：285 / 289

页数：5

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