By coupling a kinetic dislocation model and Monte Carlo algorithm, the recrystallized microstructure of severely deformed oxygen-free high conductivity copper was predicted at different strains imposed by equal-channel angular pressing and annealing temperatures. From a flow field model, the strain rate distribution during the equal-channel angular pressing of the material in a curved die was calculated. Then using the kinetic dislocation model, the total dislocation density and correspondingly the stored energy after each equal-channel angular pressing pass was estimated. Utilizing the Monte Carlo algorithm and the stored energy, the recrystallized microstructure was predicted. The results showed that the recrystallized grain size was decreased rapidly from the strain of first to fourth pass and then it was decreased slowly. Also, it was achieved that with increasing the annealing temperature, the grain size was increased. Moreover, a good agreement was observed between the predicted results and experimental data.

Coupling Kinetic Dislocation Model and Monte Carlo Algorithm for Recrystallized Microstructure Modeling of Severely Deformed Copper. M.Kazeminezhad, E.Hosseini: Journal of Materials Science, 2008, 43[18], 6081-6