Modeling the crystallographic texture changes in aluminum alloys during recrystallization

The evolution of crystallographic texture during recrystallization annealing is affected by the hot and cold rolling parameters. A 6016 Al alloy with various hot band textures was subjected to conventional rolling and short time annealing at elevated temperature. Asymmetric rolling with differential circumferential velocities of the top and bottom rolls was applied to the aluminum alloy under investigation to modify the hot rolling texture. The presence of large constituent particles enforces strain heterogeneities during cold rolling. The influence of particles on the development of recrystallization textures is discussed based on the experimental data and the results of crystal plasticity simulations. A recrystallization model based on nucleation and growth selection is presented. The driving force for nucleation was accounted for by applying continuum mechanics crystal plasticity models, which allow calculation of the stored energy of plastic strain for specific orientations of the polycrystalline aggregate and for the strain mode under consideration. Crystal misorientations of type 〈1 1 1〉 40° were attributed to enhanced mobility during the growth stage of recrystallization.