Finite element simulation on strain-induced martensitic transformation effects in TRIP steel sheet forming

被引：8

作者：

Dan, W. J. ^{[1
]}

Zhang, W. G. ^{[1
]}

Li, S. H. ^{[1
]}

Lin, Z. Q. ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mech Engn, Auto Body Manufacture Technol Ctr, Shanghai 200240, Peoples R China

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2007年 / 39卷 / 03期

基金：

中国国家自然科学基金;

关键词：

martensitic transformation; TRIP steel; deep drawing; finite element simulation;

D O I：

10.1016/j.commatsci.2006.08.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, Tomita and Iwanmoto (TI) model is improved to simulate the forming process of TRIP steel sheet with four phases (ferrite, bainite, retained austenite and martensite). Anisotropic yield function is used to replace Mises yield function in TI model. A mixture hardening law with four phases is used to substitute for the mixture hardening law with two phases, and is verified by experiment data. The results of experiment and simulation are compared by the retained austenite volume fraction. The comparisons under uniaxial stretching, plane-strain stretching and balance biaxial stretching conditions approve that the constitutive equation is feasible. Can deep drawing is simulated with the new constitutive equation, and transformation of retained austenitic is agreed with experiment results. The effect of plastic strain and stress states on the retained austenite transformation is analyzed. Thickness distribution of the sheet forming process of TRIP steel shows that the new model is more suitable than the TI model. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：593 / 599

页数：7

共 29 条

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