Unique serrated flow dependence of critical stress in a hot-rolled Fe-Mn-Al-C steel

被引：73

作者：

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

Ding, H. ^{[1
]}

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

Kong, H. ^{[1
]}

机构：

[1] Northeastern Univ, Sch Mat & Met, 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 | 2014年 / 71卷

基金：

中国国家自然科学基金;

关键词：

Austenite stability; Discontinuous TRIP effect; Work hardening behavior; Stress relaxation; INDUCED PLASTICITY STEEL; MECHANICAL-PROPERTIES; MARTENSITIC-TRANSFORMATION; AUSTENITE STABILITY; MANGANESE STEEL; TRIP STEELS; AIDED STEEL; DUAL-PHASE; STRAIN; BEHAVIOR;

D O I：

10.1016/j.scriptamat.2013.09.009

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We describe here an intriguing and unique serrated flow behavior in a hot-rolled Fe-11Mn-4Al-0.2C transformation-induced plasticity (TRIP) steel, subjected to an optimized quenching and tempering (Q&T) treatment. The optimized Q&T treatment produced a ferrite austenite microstructure that was characterized by serrated flow during tensile straining. The serrated behavior is attributed to a discontinuous TRIP effect involving stress relaxation and transfer during deformation with consequent enhancement in ductility. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：5 / 8

页数：4

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