Development of new hardening evolution equation based on crystallographic misorientation theory for multi-scale finite element analysis

In this study, we try to reveal the relationship between the plastic deformation and the microscopic crystallographic misorientation evolution by using our multi-scale finite element (FE) code by using a crystallographic misorientation theory. We employed two-scale structure, such as a microscopic polycrystal structure and a macroscopic elastic plastic continuum. Our analysis code predicts the deformation behavior of polycrystal metal in macro-scale, and simultaneously the crystal texture and misorientation evolutions in the micro-scale. We studied rotation evolutions of tricrystal metals in the plane strain and equi-biaxial tensile deformation problems.