A new model for recrystallization of heavily cold-rolled aluminum using orientation-dependent stored energy

Abstract

A model for recrystallization of heavily cold-rolled aluminum is proposed. This model has been tested employing a three-dimensional modified Monte-Carlo procedure, which incorporates a full description of microstructure and texture. The necessary input parameters such as orientation-dependent stored deformation energy have been obtained using X-ray diffraction. In order to overcome the complexity of the deformed microstructure, the orientation and location of the nuclei are selected by a set of proposed conditions based on texture and scatter in the measured orientation-dependent stored energies in the cold-rolled and stress-relieved states. The rate of reduction of stored energy plays a major role in deciding the rate of nucleation of new grains with different orientations. The unique misorientation distribution that cube grains have in the cold-rolled matrix is responsible for the enhanced growth rate of the nucleated cube grains. The simulated results are compared with the experimental data. Agreement of these results suggests that in the development of the cube texture both oriented nucleation and oriented growth play an important role.