Deformation processes during tensile straining of ultrafine/nanograined structures formed by reversion in metastable austenitic steels

被引：135

作者：

Misra, R. D. K. ^{[1
]}

Kumar, B. Ravi ^{[1
]}

Somani, M. ^{[2
]}

Karjalainen, P. ^{[2
]}

机构：

[1] Univ Louisiana Lafayette, Ctr Struct & Funct Mat, Lafayette, LA 70504 USA

[2] Univ Oulu, Dept Mech Engn, Oulu 90014, Finland

来源：

SCRIPTA MATERIALIA | 2008年 / 59卷 / 01期

关键词：

metastable austenitic stainless steel; ultrafine/nanograined; deformation; structure;

D O I：

10.1016/j.scriptamat.2008.02.028

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The deformation behavior of ultrafine/nanograined (UFG/NG) structures during tensile straining has been examined by electron microscopy in metastable austenitic steels. Special fine-grained structures were obtained by controlled phase-reversion annealing of heavily cold-worked metastable austenite, leading to an excellent tensile strength-ductility combination. Twinning and dislocation glide were identified as the primary deformation mechanisms operating in UFG/NG structures. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：79 / 82

页数：4

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