Microstructural evolution and strain hardening of Fe-24Mn and Fe-30Mn alloys during tensile deformation

被引：102

作者：

Liang, X. ^{[1
]}

McDermid, J. R. ^{[2
]}

Bouaziz, O. ^{[3
]}

Wang, X. ^{[1
]}

Embury, J. D. ^{[1
]}

Zurob, H. S. ^{[1
]}

机构：

[1] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4L7, Canada

[2] McMaster Univ, Dept Mech Engn, Hamilton, ON L8S 4L7, Canada

[3] Arcelor Res, F-57283 Maizieres Les Metz, France

来源：

ACTA MATERIALIA | 2009年 / 57卷 / 13期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Fe-Mn alloys; Strain-induced transformations; Work hardening; Modelling; STACKING-FAULT-ENERGY; MANGANESE AUSTENITIC STEEL; HADFIELD STEEL; MARTENSITIC-TRANSFORMATION; BEHAVIOR; SINGLE; TEMPERATURE; MECHANISMS; SLIP; DEPENDENCE;

D O I：

10.1016/j.actamat.2009.05.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High Mn steels demonstrate an exceptional combination of high strength and ductility owing to their sustained high work hardening rate during deformation. In the present work, the microstructural evolution and work hardening of Fe-30Mn and Fe-24Mn alloys during uniaxial tensile testing at 293 K and 77 K were investigated. The Fe-30Mn alloy did not undergo significant strain-induced phase transformations or twinning during deformation at 293 K, whereas these transformations were observed during deformation at 77 K. A modified Kocks-Mecking model was successfully applied to describe the strain hardening behavior of Fe-30Mn at both temperatures, and quantitatively identified the influence of stacking fault energy and strain-induced phase transformations on dynamic recovery. The Fe-24Mn alloy underwent extensive epsilon martensite transformation during deformation at both test temperatures. An analytical micromechanical model was successfully used to describe the,work hardening of Fe-24Mn and permitted the calculation of the epsilon martensite stress-strain Curve and tensile properties. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：3978 / 3988

页数：11

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