An approximate procedure for predicting the evolution of crystallographic texture in bulk deformation processing of fcc metals

Abstract An approximate procedure for predicting the evolution of crystallographic texture during bulk deformation processing of fcc materials is proposed. The two steps in the proposed procedure are: (1) extract the history of the local deformation gradient in the neighborhood of a material point of interest with a finite element calculation using an isotropic plasticity model ; (2) use this deformation gradient history in a separate Taylor-type polycrystal model calculation outside the finite element procedure , to predict the evolution of crystallographic texture at the material point of interest. Using this approximate but quicker procedure we have simulated two different plane-strain forgings of initially isotropic OFHC copper, and evaluated the accuracy of the procedure by comparing predictions for the overall load-displacement curves and texture evolution against corresponding experimental results. The two-step approximate procedure is shown to work well for the high-symmetry fcc copper formed in closed dies.