A numerical investigation of the effect of texture op mechanical properties of dual phase steel using a dislocation-based crystal plasticity model Conference Paper uri icon

abstract

  • Copyright 2015 MS & T15. In this work, we investigate if and how the initial texture of dual phase (DP) steel affects its mechanical behavior. We advocate a multi-scale approach that combines a continuum dislocation dynamic model (CDD) and a viscoplastic self-consistent (VPSC) model. The model accounts for the texture evolution, the effect of dislocations evolution inside the grain and the grain-grain interactions. Size effect is modeled by incorporating the density of the so called geometrically necessary dislocations (GND) into the equation for the dislocation mean free path. Different initial rolling textures of DP980 are generated and used as input in the multi-scale model. By using parameters obtained previously, the stress-strain curves and the texture evolution for various initial textures are predicted. The effect of different texture fibers on the mechanical behavior of the material are studied and compared to experiment results.

published proceedings

  • Materials Science and Technology Conference and Exhibition 2015, MS and T 2015

author list (cited authors)

  • Lyu, H., Ruimi, A., Zhang, F., & Zbib, H. M.

complete list of authors

  • Lyu, H||Ruimi, A||Zhang, F||Zbib, HM

publication date

  • January 1, 2015 11:11 AM