Effect of second phase particles on the recrystallization kinetics of a Cu-Cr-Zr alloy

The recrystalization process of a copper aloy containing different distributions of fine and coarse particles has been studied by following the softenin that occurs during isothermal anneals between 500 an 700º C. The mechanisms involved in the formation of the new grains have been studied by >in situ> heating experiments in the TEM and by observation from the bulk samples at different stages after annealing. The mechanism of granin formation seems independent of particle distribution an involves the reorientation of the deforamtion cells into subgrains and into well defined grains by dislocation rearrangement en the cell walls.