Effect of pre-deformation on the tensile properties of a metastable austenitic steel

被引：26

作者：

Jung, Yeon-Seung ^{[1
]}

Lee, Young-Kook ^{[1
]}

机构：

[1] Yonsei Univ, Dept Met Engn, Seoul 120749, South Korea

来源：

SCRIPTA MATERIALIA | 2008年 / 59卷 / 01期

关键词：

metastable austenite; strain-induced martensite; mechanical stabilization; strain hardening; plastic instability;

D O I：

10.1016/j.scriptamat.2008.02.019

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of pre-deformation on the tensile properties of an ultrafine-grained metastable austenitic steel was investigated. The pre-deformation greatly improves the yield stress and austenite stability. However, the pre-deformation has little effect on the rate of martensitic transformation with the true strain or on the strain hardening rate at large strains. The higher yield stress and unimproved strain hardening rate in the warm-rolled specimen cause premature plastic instability and smaller uniform ductility. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：47 / 50

页数：4

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