抄録
We have developed a modified three-dimensional x-ray diffraction (3DXRD) microscopy, which enables us to obtain three-dimensional orientation map non-destructively. In other study we have examined the plastic behavior for polycrystalline iron by the 3DXRD experiment. In this study we performed the crystal plasticity finite element (CPFE) analysis which corresponds to the 3DXRD observation. The plastic deformation state of the finite element model was computed by means of CPFE analysis based on the body centered cubic (BCC) crystal with slip system of {011}<111>, {112}<111>and {123}<111>. Both the experimental observation and the numerical analysis showed that the most of the grains rotated toward the preferred orientation <110> along the tensile axis and that intra-granular orientation spread and multi-directionally rotated as the tensile strain increased, which was caused by inter-granular interaction. Remaining discrepancy was due to the observation technique and/or the constitutive model adopted in the present study.
