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논문 기본 정보

자료유형
학술대회자료
저자정보
K.S. Choi (Pacific Northwest National Laboratory) W.N. Liu (Pacific Northwest National Laboratory) X. Sun (Pacific Northwest National Laboratory) M.A. Khaleel (Pacific Northwest National Laboratory)
저널정보
한국소성·가공학회 기타자료 NUMIFORM 2010
발행연도
2010.6
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1,265 - 1,270 (6page)

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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 Xray 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.

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Abstract
INTRODUCTION
MICROMECHANICS MODELING OF TRIP800
DUCTILITY AND FAILURE MODES UNDER DIFFERENT LOADING
CONCLUSIONS
REFERENCES

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UCI(KEPA) : I410-ECN-0101-2014-550-003327066