Plastic Flow and Strain Homogeneity of an Equal Channel Angular Pressing Process Enhanced through Forward Extrusion

被引：5
作者：
Nagasekhar, A. V. [2 ]
Yoon, S. C. [3 ]
Yoo, J. H. [1 ]
Kang, S. -Y. [4 ]
Baik, S. C. [5 ]
El Aal, M. I. A. [6 ]
Kim, H. S. [1 ]
机构：
[1] POSTECH, Dept Mat Sci & Engn, Pohang 790784, South Korea
[2] Univ Queensland, ARC Ctr Excellence Design Light Met, Brisbane, Qld 4072, Australia
[3] Hyundai HYSCO, Res & Dev Team, Chungnam 343831, South Korea
[4] POSCO China Holding Co, Shanghai, Peoples R China
[5] POSCO, Seoul, South Korea
[6] Zagazig Univ, Fac Engn, Mech Design & Prod Dept, Zagazig, Egypt
来源：
MATERIALS TRANSACTIONS | 2010年 / 51卷 / 05期
关键词：
equal channel angular pressing; severe plastic deformation; forward extrusion; plastic deformation; combined process; strain homogeneity; FINITE-ELEMENT-ANALYSIS; DEFORMATION-BEHAVIOR; MECHANICAL-PROPERTIES; GRAIN-REFINEMENT; ECAP; MICROSTRUCTURE; ALLOY; POWDER; COPPER; TUBES;
D O I：
10.2320/matertrans.M2009407
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The plastic deformation behavior of forward extrusion, equal channel angular pressing, and a combination of the forward extrusion and equal channel angular pressing processes are analyzed by the finite element method. Simulations were carried out under realistic conditions by considering the strain hardening of the material and the degree of friction. Strain homogeneity in the combined processes is also compared to that of the individual forward extrusion and equal channel angular pressing processes. The plastic flow is more complicated and the strain induced is non-uniform in the combined processes. However, the combined processes show no corner gap formation. Moreover, it led to the development of higher strains in a single step compared to the individual processes. In addition, the load requirements for the combined processes are higher than the summation of loads of the individual processes. [doi:10.2320/matertrans.M2009407]
引用
收藏
页码：977 / 981
页数：5
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