Applicability of micromechanics model based on actual microstructure for failure prediction of DP steels

K. S. Choi, A. Soulami, W. N. Liu, Xin Sun, M. A. Khaleel

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this paper, various micromechanics models based on actual microstructures of DP steels are examined in order to determine the reasonable range of martensite volume fraction where the methodology described in this study can be applied. For this purpose, various micromechanics-based finite element models are first created based on the actual microstructures of DP steels with different martensite volume fractions. These models are, then, used to investigate the influence of ductility of the constituent ferrite and martensite phases and also the influence of voids in the ferrite phase on the overall ductility of DP steels. The computational results indicate that there is a range of martensite volume fraction where the phase inhomogeneity between the ferrite and martensite phases has dominant effect on the overall ductility of DP steels, defeating the influence of the ductility of each phase and the voids in the ferrite phase, and that this phase inhomogeneity dominant region includes the range of marteniste volume fraction between 15% and 40%. Therefore, the methodology, adopted in this study, may be applied to DP steels within the phase inhomogeneity dominant region in tailoring the DP steel design for its intended purpose and desired properties.

Original languageEnglish
Pages (from-to)241-249
Number of pages9
JournalSAE International Journal of Materials and Manufacturing
Volume2
Issue number1
DOIs
Publication statusPublished - 1 Dec 2009
Externally publishedYes

Fingerprint

Micromechanics
Martensite
Microstructure
Ferrite
Ductility
Steel
Volume fraction

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Applicability of micromechanics model based on actual microstructure for failure prediction of DP steels. / Choi, K. S.; Soulami, A.; Liu, W. N.; Sun, Xin; Khaleel, M. A.

In: SAE International Journal of Materials and Manufacturing, Vol. 2, No. 1, 01.12.2009, p. 241-249.

Research output: Contribution to journalArticle

Choi, K. S. ; Soulami, A. ; Liu, W. N. ; Sun, Xin ; Khaleel, M. A. / Applicability of micromechanics model based on actual microstructure for failure prediction of DP steels. In: SAE International Journal of Materials and Manufacturing. 2009 ; Vol. 2, No. 1. pp. 241-249.
@article{70d6f4fb854d4f5caffff49310a715d5,
title = "Applicability of micromechanics model based on actual microstructure for failure prediction of DP steels",
abstract = "In this paper, various micromechanics models based on actual microstructures of DP steels are examined in order to determine the reasonable range of martensite volume fraction where the methodology described in this study can be applied. For this purpose, various micromechanics-based finite element models are first created based on the actual microstructures of DP steels with different martensite volume fractions. These models are, then, used to investigate the influence of ductility of the constituent ferrite and martensite phases and also the influence of voids in the ferrite phase on the overall ductility of DP steels. The computational results indicate that there is a range of martensite volume fraction where the phase inhomogeneity between the ferrite and martensite phases has dominant effect on the overall ductility of DP steels, defeating the influence of the ductility of each phase and the voids in the ferrite phase, and that this phase inhomogeneity dominant region includes the range of marteniste volume fraction between 15{\%} and 40{\%}. Therefore, the methodology, adopted in this study, may be applied to DP steels within the phase inhomogeneity dominant region in tailoring the DP steel design for its intended purpose and desired properties.",
author = "Choi, {K. S.} and A. Soulami and Liu, {W. N.} and Xin Sun and Khaleel, {M. A.}",
year = "2009",
month = "12",
day = "1",
doi = "10.4271/2009-01-0469",
language = "English",
volume = "2",
pages = "241--249",
journal = "SAE International Journal of Materials and Manufacturing",
issn = "1946-3979",
publisher = "SAE International",
number = "1",

}

TY - JOUR

T1 - Applicability of micromechanics model based on actual microstructure for failure prediction of DP steels

AU - Choi, K. S.

AU - Soulami, A.

AU - Liu, W. N.

AU - Sun, Xin

AU - Khaleel, M. A.

PY - 2009/12/1

Y1 - 2009/12/1

N2 - In this paper, various micromechanics models based on actual microstructures of DP steels are examined in order to determine the reasonable range of martensite volume fraction where the methodology described in this study can be applied. For this purpose, various micromechanics-based finite element models are first created based on the actual microstructures of DP steels with different martensite volume fractions. These models are, then, used to investigate the influence of ductility of the constituent ferrite and martensite phases and also the influence of voids in the ferrite phase on the overall ductility of DP steels. The computational results indicate that there is a range of martensite volume fraction where the phase inhomogeneity between the ferrite and martensite phases has dominant effect on the overall ductility of DP steels, defeating the influence of the ductility of each phase and the voids in the ferrite phase, and that this phase inhomogeneity dominant region includes the range of marteniste volume fraction between 15% and 40%. Therefore, the methodology, adopted in this study, may be applied to DP steels within the phase inhomogeneity dominant region in tailoring the DP steel design for its intended purpose and desired properties.

AB - In this paper, various micromechanics models based on actual microstructures of DP steels are examined in order to determine the reasonable range of martensite volume fraction where the methodology described in this study can be applied. For this purpose, various micromechanics-based finite element models are first created based on the actual microstructures of DP steels with different martensite volume fractions. These models are, then, used to investigate the influence of ductility of the constituent ferrite and martensite phases and also the influence of voids in the ferrite phase on the overall ductility of DP steels. The computational results indicate that there is a range of martensite volume fraction where the phase inhomogeneity between the ferrite and martensite phases has dominant effect on the overall ductility of DP steels, defeating the influence of the ductility of each phase and the voids in the ferrite phase, and that this phase inhomogeneity dominant region includes the range of marteniste volume fraction between 15% and 40%. Therefore, the methodology, adopted in this study, may be applied to DP steels within the phase inhomogeneity dominant region in tailoring the DP steel design for its intended purpose and desired properties.

UR - http://www.scopus.com/inward/record.url?scp=77953211999&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77953211999&partnerID=8YFLogxK

U2 - 10.4271/2009-01-0469

DO - 10.4271/2009-01-0469

M3 - Article

VL - 2

SP - 241

EP - 249

JO - SAE International Journal of Materials and Manufacturing

JF - SAE International Journal of Materials and Manufacturing

SN - 1946-3979

IS - 1

ER -