Numerical study of grain rotation in polycrystalline metal during plastic deformation

When polycrystalline metals deform plastically, respective grains rotate due to crystal slips on the active slip planes and the preferred orientation is produced. In the present paper, the rate-type constitutive equation and the constant stress model of polycrystals are adopted, and the grain rotation is calculated for fcc and bcc metals. The rate sensitivity exponent in the rate-type constitutive equation is closely related to the number of active slip systems. So, the effect of the number of active slip systems on the grain rotation or the formation of texture is numerically studied and discussed.