A Multi-Scale Modeling of Multiphase Advanced High Strength Steels Based on Crystal Plasticity and Evolutionary Yield Function

10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes

Pourboghrat, Farhang^1 ; Park, Taejoon^1

Ohio State University, Department of Integrated Systems Engineering, Ohio State University, 210 Baker Systems, 1971 Neil Avenue, Columbus

OH

43210, United States^1

关键词: Advanced high strength steel;    Analytical predictions;    Crystal plasticity;    Crystal plasticity models;    Mechanical behavior;    Multi-scale Modeling;    Multiphase materials;    Orientation distributions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/734/3/032086/pdf
DOI  :  10.1088/1742-6596/734/3/032086

来源: IOP

【 摘 要 】

A multi-scale modeling of multiphase advanced high strength steels was developed based on crystal plasticity and evolutionary yield function. An analytical model to directly predict the mechanical behavior of each phase was developed from crystal plasticity model and EBSD data. Considering the grain size and orientation distribution, evolution of the yield surface could be directly predicted by the analytical prediction model. The yield surface prediction results were applied to the evolutionary yield function model. Macroscopic mechanical behavior of the multiphase material could be predicted by considering the volume fraction of each phase, which enables to optimize the desired material properties during the development of the multiphase material.