The dead metal zone in high-pressure torsion

被引：52

作者：

Lee, Dong Jun ^{[1
]}

Yoon, Eun Yoo ^{[1
]}

Park, Lee Ju ^{[2
]}

Kim, Hyoung Seop ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol POSTECH, Dept Mat Sci & Engn, Pohang 790784, South Korea

[2] ADD, Taejon 305152, South Korea

来源：

SCRIPTA MATERIALIA | 2012年 / 67卷 / 04期

关键词：

High-pressure torsion; Severe plastic deformation; Finite element analysis; Dead metal zone; FINITE-ELEMENT-ANALYSIS; DEFORMATION-BEHAVIOR; PLASTIC-DEFORMATION; ALLOY; ALUMINUM; MODEL;

D O I：

10.1016/j.scriptamat.2012.05.024

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Plastic deformation behavior during high-pressure torsion (HPT) was analyzed by the finite element method in order to investigate heterogeneous deformation in HPT-processed disks. The effective strain and strain rate developed increase from the center to the edge of the HPT-processed disk; however, they decrease to zero at the surface corner of the disk due to the vertical wall constraint under high pressure, resulting in a stagnant region termed the "dead metal zone". (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：384 / 387

页数：4

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