%0 Publication %T Multiscale characterization of a polycrystalline aggregate subjected to severe plastic deformation with the finite element method %A Ikumu Watanabe; Daigo Setoyama %8 28/02/2023 %I Japan Institute of Metals %U https://mdr.nims.go.jp/concern/publications/f7623g97b %( https://doi.org/10.2320/matertrans.MH201514 %X The heterogeneous deformation of a polycrystalline aggregate under severe plastic deformation was reproduced with finite element analysis by using single-crystal plasticity to characterize the evolution process of the heterogeneity. Finite element analyses of a periodic polycrystalline aggregate were carried out to simulate the deformation process corresponding to the multi-pass equal-channel angular extrusion process, which reached over 250% of the macroscopic logarithmic accumulated plastic strain. The numerical results were analyzed from multi-scale perspectives: the macroscopic response, evolution of the crystallographic orientation, and deformation state of the microstructure. This study addressed the importance of finite element discretization to reproduce the heterogeneous deformat %G English %9 Article %K crystal plasticity; finite element analysis; severe plastic deformation; texture %~ MDR: NIMS Materials Data Repository %W National Institute for Materials Science