Recrystallization of copper under hydrostatic pressure up to 15 kbar

Hydrostatic pressure (up to 15 kbar) during annealing results in retardation of recrystallization during initial recrystallization of copper; the rate of nucleation and growth of new grains are both retarded. The effect of pressure on the nucleation rate is extremely high and a finer crystalline structure results during annealing under pressure.The difference in the rate of formation of recrystallization nuclei and their growth under uniform pressure is connected with the considerable role of volume diffusion in nucleation of the recrystallized structure.