MODELING OF THE CRYSTALLOGRAPHIC TEXTURE EVOLUTION OF ELECTRICAL STEEL DURING COLD ROLLING

The Taylor texture evolution model is adapted for electrical steel in this paper by taking into account the different nature of hardening of different types of slip systems. The initial data for the modelling were the texture of annealed semi-finished hot-rolled plate before cold rolling and the components of the plastic strain tensor. Initial critical resolved shear stresses and the hardening laws of various slip systems were obtained from literature and from the analysis results of the work hardening inhomogeneity by the Generalized Pole Figures registered at each pass of the cold rolling. The analysis of the substructural state of the differently oriented crystallites showed the inhomogeneity of the accumulated distortion of the crystal lattice for grains belonging to different components of the rolling texture. The results of experimental studies of the crystallographic texture of samples after each pass during cold rolling are compared with the calculated values of the grain orientation distribution function.