A model for TRIP steel constitutive behavior

E.S. Perdahcioǧlu; H.J.M. Geijselaers

doi:10.1063/1.3589729

A model for TRIP steel constitutive behavior

E.S. Perdahcioǧlu, H.J.M. Geijselaers

Research output: Contribution to journal › Article › Academic › peer-review

2 Citations (Scopus)

Abstract

A constitutive model is developed for TRIP steel. This is a type of steel which contains three or four different phases in its microstructure. One of the phases in TRIP steels is metastable austenite (Retained Austenite) which transforms to martensite upon deformation. The accompanying transformation strain and the increase in hardness provide excellent formability characteristics. The phase transformation depends on the stress in the austenite, which is not equal to the overall stress. An estimate of the local stress in the austenite is obtained by homogenization of the response of the phases using a Mean-Field homogenization method. Overall stress strain results as well as stress strain results for individual phases are compared to measurements found in literature. The model can be used in finite element simulations of forming processes.

Original language	English
Pages (from-to)	1500-1504
Number of pages	5
Journal	AIP conference proceedings
Volume	1353
DOIs	https://doi.org/10.1063/1.3589729
Publication status	Published - 1 Dec 2011

Keywords

Martensitic transformation
Mean field homogenization
TRIP

Access to Document

10.1063/1.3589729

Cite this

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title = "A model for TRIP steel constitutive behavior",

abstract = "A constitutive model is developed for TRIP steel. This is a type of steel which contains three or four different phases in its microstructure. One of the phases in TRIP steels is metastable austenite (Retained Austenite) which transforms to martensite upon deformation. The accompanying transformation strain and the increase in hardness provide excellent formability characteristics. The phase transformation depends on the stress in the austenite, which is not equal to the overall stress. An estimate of the local stress in the austenite is obtained by homogenization of the response of the phases using a Mean-Field homogenization method. Overall stress strain results as well as stress strain results for individual phases are compared to measurements found in literature. The model can be used in finite element simulations of forming processes.",

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T1 - A model for TRIP steel constitutive behavior

AU - Perdahcioǧlu, E.S.

AU - Geijselaers, H.J.M.

PY - 2011/12/1

Y1 - 2011/12/1

N2 - A constitutive model is developed for TRIP steel. This is a type of steel which contains three or four different phases in its microstructure. One of the phases in TRIP steels is metastable austenite (Retained Austenite) which transforms to martensite upon deformation. The accompanying transformation strain and the increase in hardness provide excellent formability characteristics. The phase transformation depends on the stress in the austenite, which is not equal to the overall stress. An estimate of the local stress in the austenite is obtained by homogenization of the response of the phases using a Mean-Field homogenization method. Overall stress strain results as well as stress strain results for individual phases are compared to measurements found in literature. The model can be used in finite element simulations of forming processes.

AB - A constitutive model is developed for TRIP steel. This is a type of steel which contains three or four different phases in its microstructure. One of the phases in TRIP steels is metastable austenite (Retained Austenite) which transforms to martensite upon deformation. The accompanying transformation strain and the increase in hardness provide excellent formability characteristics. The phase transformation depends on the stress in the austenite, which is not equal to the overall stress. An estimate of the local stress in the austenite is obtained by homogenization of the response of the phases using a Mean-Field homogenization method. Overall stress strain results as well as stress strain results for individual phases are compared to measurements found in literature. The model can be used in finite element simulations of forming processes.

KW - Martensitic transformation

KW - Mean field homogenization

KW - TRIP

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SN - 0094-243X

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JO - AIP conference proceedings

JF - AIP conference proceedings

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