Effects of retained austenite stability and volume fraction on deformation behaviors of TRIP steels

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, the separate effects of austenite stability and its volume fraction on the deformation behaviors of transformation-induced plasticity (TRIP) steels are investigated based on the microstructure-based finite element modeling method. The effects of austenite stability on the strength, ductility and formability of TRIP steels are first examined based on the microstructure of a commercial TRIP 800 steel. Then, the separate effects of the austenite volume fraction on the overall deformation behaviors of TRIP steels are examined based on the various representative volume elements (RVEs). The computational results suggest that the higher austenite stability is helpful to increase the ductility and formability, but not the UTS. However, the increase of austenite volume fraction alone is not helpful in improving the performance of TRIP steels. This may indicate that various other material factors should also be concurrently adjusted during thermomechanical manufacturing process in a way to increase the performance of TRIP steels, which needs further investigation.

Original languageEnglish
Title of host publicationMaterials Science and Technology Conference and Exhibition 2010, MS and T'10
Pages1852-1860
Number of pages9
Publication statusPublished - 1 Dec 2010
EventMaterials Science and Technology Conference and Exhibition 2010, MS and T'10 - Houston, TX, United States
Duration: 17 Oct 201021 Oct 2010

Publication series

NameMaterials Science and Technology Conference and Exhibition 2010, MS and T'10
Volume3

Other

OtherMaterials Science and Technology Conference and Exhibition 2010, MS and T'10
CountryUnited States
CityHouston, TX
Period17/10/1021/10/10

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Keywords

  • Austenite stability, microstructure, finite element analysis (FEA)
  • TRIP steels

ASJC Scopus subject areas

  • Materials Science (miscellaneous)

Cite this

Choi, K. S., Soulami, A., Liu, W. N., Sun, X., & Khaleel, M. A. (2010). Effects of retained austenite stability and volume fraction on deformation behaviors of TRIP steels. In Materials Science and Technology Conference and Exhibition 2010, MS and T'10 (pp. 1852-1860). (Materials Science and Technology Conference and Exhibition 2010, MS and T'10; Vol. 3).