About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Deformation-induced Microstructural Evolution during Solid Phase Processing: Experimental and Computational Studies
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Presentation Title |
Crystal Plasticity Finite Element Modeling Integrated with Transformation Induced Plasticity of Metastable Austenitic Steel at Low Temperature |
Author(s) |
Hyukjae Lee, Tan Nguyen, Jinwook Jung, Sung-Tae Hong, Myoung-Gyu Lee, Heung Nam Han |
On-Site Speaker (Planned) |
Hyukjae Lee |
Abstract Scope |
A temperature-dependent crystal plasticity model incorporated with transformation-induced plasticity of metastable austenite was developed. The model accounts for a dislocation-based hardening law for multiple slip systems and plastic strain caused by lattice structure change during phase transformation. A mean-field homogenization scheme was utilized to approximate the deformation behavior of polycrystalline aggregates. A martensitic transformation model assuming shear band intersection as a nucleation site and considering variant selectivity of martensitic variants under the stress field was adopted. The temperature dependence of the current model is based on the variation of dynamic recovery of dislocation and fraction of shear band intersection by temperature. The model was implemented into explicit finite element analysis software ABAQUS/Explicit via user material subroutine(VUMAT). For 304 ASS, uniaxial tensile property, phase fraction, and texture measurement were conducted for validation of model at low temperature in the various temperature range from room temperature to 173K. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Phase Transformations, Iron and Steel |