|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Computational Design and Simulation of Materials (CDSM 2018): Meso/Macroscale Simulations
||L-23: A Crystal Plasticity Finite Element Simulation of Deformation Behavior Using a Real Microstructure-based RVE in a Dual-phase Steel
||Jinwook Jung, Sang Sub Han, Siwook Park, MoonKi Bae, Seung-Hyun Hong, Kyu Hwan Oh, Heung Nam Han
|On-Site Speaker (Planned)
The mechanical behavior of a high-strength dual-phase (DP) steel is strongly affected by the heterogeneity of deformation, which leads to the microscopic stress and strain partitioning. In this work, we performed a numerical analysis on the deformation behavior of realistic microstructure based three-dimensional representative volume element (RVE) of a DP780 steel by using crystal plasticity-based finite element model. Meanwhile, we also performed an in-situ observation of a tensile behavior using EBSD scanning to validate and correlate with the simulation results. The RVE was reconstructed from EBSD data sets which were obtained successively by using the FIB/EBSD system. The material hardening constants were optimized for matching with the experimental data. From the results, the local stress and strain distributions are mostly developed near the interphase interface, which makes it possible to speculate that the crack initiation occurs in one of these regions.
||Planned: Supplemental Proceedings volume