Constitutive Modeling of the Mechanical Properties of V-added Medium Manganese TRIP Steel

被引：135

作者：

Lee, Seawoong ^{[1
]}

Estrin, Yuri ^{[2
]}

De Cooman, Bruno C. ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Grad Inst Ferrous Technol, Pohang 790784, South Korea

[2] Monash Univ, Dept Mat Engn, Ctr Adv Hybrid Mat, Clayton, Vic 3800, Australia

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2013年 / 44A卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

INDUCED PLASTICITY STEEL; LOW-CARBON; TENSILE DUCTILITY; BEHAVIOR; METALS; MARTENSITE; AUSTENITE; STRENGTH; KINETICS; IRON;

D O I：

10.1007/s11661-013-1648-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, medium Mn transformation-induced plasticity steel with the composition Fe-0.08 pct C-6.15 pct Mn-1.5 pct Si-2.0 pct Al-0.08 pct V was investigated. After intercritical annealing at 1013 K (740 A degrees C), the steel contained coarse-grained ferrite and two ultrafine-grained (UFG) phases: ferrite and retained austenite. The material did not deform by localized Luders band propagation: it did not suffer from this major problem as most UFG steels do. Localization of plastic flow was shown to be suppressed because of a combination of factors, including a bimodal grain size distribution, a multiphase microstructure, the presence of nanosized vanadium carbide precipitates, and the occurrence of the deformation-induced martensitic transformation of retained austenite. A constitutive model incorporating these effects was developed. The model was used to identify the factors which can lead to a further improvement of the mechanical properties of the UFG medium Mn TRIP steels.

引用

页码：3136 / 3146

页数：11

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