A new quantitative relation between deformation textures and corresponding mechanical properties of FCC metals

Abstract

Quantitative analysis of deformation-induced textures and texture-induced mechanical properties is an important issue for optimal design and control of plastic forming of metals. Deformation-induced textures were predicted through the crystal plasticity finite-element method (CPFEM) in this study, and varying deformation modes, including uniaxial compression, uniaxial tension, simple shear, and plane-strain compression, were considered. The predicted textures were proven by experiments. Then, a theoretical model was proposed to build the quantitative relation between textures and the corresponding mechanical properties. This model takes into account the effects of grain’s orientation, grain’s interaction, and the property in the level of single grain. It captures the macroscopic anisotropy owing to textures and microscopic anisotropy owing to crystallographic structures. By applying this model, the macroscopic stress responses of grains’ aggregate with varying textures were calculated according to grain’s orientations and the intrinsic properties of the single crystal along [100] and [111] crystallographic directions. The theoretical model is proven to have high efficiency and acceptable accuracy in the prediction of texture-induced mechanical properties comparing with CPFEM model.