Recrystallization mechanisms in two-phase alloys

Abstract

The recrystallization kinetics of alloys containing a stable, dispersed second-phase are reviewed, and the effects of interparticle spacing, particle size, particle strength, and strain are considered. An outline is given of the deformation mechanisms in two-phase alloys, the origin of the misoriented zones associated with large second-phase particles is discussed, and new results are presented. The nucleation of recrystallization at large second-phase particles is discussed in terms of the annealing behaviour of the deformation zones, and the effect of particle spacing is considered. The effect of small second-phase particles on the nucleation of recrystallization is shown to depend upon their effect on the stored energy of cold work, the nature of the nucleation sites and the pinning of boundaries. Grain growth during primary recrystallization is discussed and attention is drawn to the effect of recovery on the driving force.