Unique impact of ferrite in influencing austenite stability and deformation behavior in a hot-rolled Fe-Mn-Al-C steel

被引：81
作者：
Cai, Z. H. [1 ]
Ding, H. [1 ]
Misra, R. D. K. [2 ]
Kong, H. [1 ]
Wu, H. Y. [3 ]
机构：
[1] Northeastern Univ, Sch Met & Mat, Shenyang 110819, Peoples R China
[2] Univ Louisiana Lafayette, Lab Excellence Adv Steel Res, Ctr Struct & Funct Mat, Lafayette, LA 70504 USA
[3] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 595卷
基金：
中国国家自然科学基金;
关键词：
Intercritical ferrite; delta-Ferrite; Austenite stability; TRIP effect; Work hardening; INDUCED MARTENSITIC-TRANSFORMATION; WORK-HARDENING BEHAVIOR; MECHANICAL-PROPERTIES; RETAINED AUSTENITE; DUAL-PHASE; TRIP STEELS; LOW-ALLOY; DUCTILITY; MICROSTRUCTURE; BAINITE;
D O I：
10.1016/j.msea.2013.12.003
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The unique impact of two types of ferrite, intercritical ferrite and delta-ferrite on austenite stability and deformation behavior of hot-rolled Fe-11Mn-4Al-0.2C transformation-induced plasticity (TRIP) steel were studied. Each of the two ferrites exhibited their respective role in enhancing the stability of austenite, contributing to superior ductility. An optimized quenching at 800 degrees C and tempering at 200 degrees C adopted on the as-hot-rolled steel led to a ferrite-austenite mixed microstructure that was characterized by excellent combination of tensile strength of 1082 MPa and elongation of 35%, and a three-stage work hardening behavior. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：86 / 91
页数：6
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