Plastic deformation analysis of accumulative back extrusion

被引：6
|
作者：
Yoon, S. C. [2 ]
Nagasekhar, A. V. [3 ]
Kang, S. -Y. [4 ]
Kim, H. S. [1 ]
机构：
[1] Pohang Univ Sci & Technol, Dept Mat Sci & Engn, POSTECH, Pohang 790784, South Korea
[2] POSTECH, Ctr Adv Aerosp Mat, Pohang, South Korea
[3] Univ Queensland, ARC Ctr Excellence Design Light Met, Brisbane, Qld, Australia
[4] POSCO China Holding Co, Shanghai, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH | 2009年 / 100卷 / 12期
关键词：
Severe plastic deformation; Accumulative back extrusion; Strain heterogeneity; Finite element analysis; Indirect extrusion; CHANNEL ANGULAR EXTRUSION; FINITE-ELEMENT-ANALYSIS; BEHAVIOR; COPPER; HOMOGENEITY; POWDER; STEEL; TUBES; FLOW; TOOL;
D O I：
10.3139/146.110236
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Finite element analysis for the recently developed plastic deformation process, accumulative back extrusion, is carried out to understand the plastic deformation behavior during the processing in terms of geometry, equivalent strain, principal stress, and load history. The simulated results show that the deformation is highly nonuniform, and that it is almost impossible to achieve strain homogeneity by repeating the accumulative back extrusion process. In addition, the folding defects generated in the workpiece with cycles of accumulative back extrusion can cause surface fracture.
引用
收藏
页码：1715 / 1719
页数：5
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