Effect of Texture on Non-normality of Hexagonal Metal

Abstract

The non-normality effect of polycrystalline pure magnesium is numerically investigated using the crystal plasticity approach. A homogenization-based finite element method is introduced to compute the macroscopic material behaviors with a crystalline scale structure. Numerical analyses with two types of initial textures, the random and rolled textures, are conducted, and the effect of initial texture is discussed. It is shown that the intensity of the non-normality depends on the amplitude of the offset strain, while that of FCC metal is almost independent from the offset strain. Additionally, the non-normality angle of rolling textured material is lower than that of random textured material.