Predicting ductility and failure modes of TRIP steels under different loading conditions

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

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

Abstract

In this paper, we examine the ultimate ductility and failure modes of a TRIP (TRansformation-Induced Plasticity) 800 steel with an advanced micromechanics-based finite element analysis. The representative volume element (RVE) for the TRIP800 under examination is developed based on an actual microstructure obtained from scanning electron microscopy (SEM). The evolution of retained austenite during deformation process and the mechanical properties of the constituent phases of the TRIP800 steel are obtained from the synchrotron-based in-situ high-energy X-ray diffraction (HEXRD) experiments and a self-consistent (SC) model. The ductile failure of the TRIP800 under different loading conditions is predicted in the form of plastic strain localization without any prescribed failure criteria for the individual phases. Comparisons of the computational results with experimental measurements suggest that the microstructure-based finite element analysis can well capture the overall macroscopic behavior of the TRIP800 steel under different loading conditions. The methodology described in this study may be extended for studying the ultimate ductile failure mechanisms of TRIP steels as well as the effects of the various processing parameters on the macroscopic behaviors of TRIP steels.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
Pages1265-1270
Number of pages6
Volume1252
DOIs
Publication statusPublished - 3 Sep 2010
Externally publishedYes
Event10th International Conference on Numerical Methods in Industrial Forming Processes Dedicated to Professor O. C. Zienkiewicz (1921-2009), NUMIFORM 2010 - Pohang, Korea, Republic of
Duration: 13 Jun 201017 Jun 2010

Other

Other10th International Conference on Numerical Methods in Industrial Forming Processes Dedicated to Professor O. C. Zienkiewicz (1921-2009), NUMIFORM 2010
CountryKorea, Republic of
CityPohang
Period13/6/1017/6/10

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Keywords

  • ductility
  • failure criteria
  • phase transformation
  • retained austenite
  • TRIP steel

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Choi, K. S., Liu, W. N., Sun, X., & Khaleel, M. A. (2010). Predicting ductility and failure modes of TRIP steels under different loading conditions. In AIP Conference Proceedings (Vol. 1252, pp. 1265-1270) https://doi.org/10.1063/1.3457528