Significance of control of austenite stability and three-stage work-hardening behavior of an ultrahigh strength high ductility combination transformation-induced plasticity steel

被引：107

作者：

Cai, Z. H. ^{[1
]}

Ding, H. ^{[1
]}

Xue, X. ^{[1
]}

Jiang, J. ^{[1
]}

Xin, Q. B. ^{[1
]}

Misra, R. D. K. ^{[2
]}

机构：

[1] Northeastern Univ, Sch Met & Mat, Shenyang 110819, Peoples R China

[2] Univ Louisiana Lafayette, Ctr Struct & Funct Mat, Lab Excellence Adv Steel Res, Lafayette, LA 70504 USA

来源：

SCRIPTA MATERIALIA | 2013年 / 68卷 / 11期

关键词：

Ferrite phase; TRIP steel; Three-stage; Work hardening; Austenite stability; DUAL-PHASE STEELS; MECHANICAL-PROPERTIES; GRAIN-SIZE; TRIP STEEL; MICROSTRUCTURE; DEFORMATION; REFINEMENT;

D O I：

10.1016/j.scriptamat.2013.02.010

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In the context of obtaining high strength-high ductility combination in transformation-induced plasticity steels, we underscore the practical significance of controlling the stability of austenite during deformation such that strain hardening induced by martensite transformation occurs at a critical strain. An optimized intercritical hardening at 750 C led to a ferrite austenite microstructure that was characterized by similar to 64% austenite and excellent combination of tensile strength of similar to 1000 MPa and elongation of similar to 65%, and a three-stage work hardening behavior. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：865 / 868

页数：4

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