The Development of Microstructure and Texture During the Deformationand Annealing of Particle-Containing Polycrystals

When an alloy containing non-deformable second-phase particles is deformed, then the incompatibility of the particles and the deforming matrix may result in what is essentially "turbulent flow" of the matrix adjacent to the particles, and at particles larger than around 0.5/tm, highly .rotated deformation zones may form. If the volume fraction of particles is large, then these zones may influence the deformation texture. Particles may also have an effect on the long range heterogeneity of deformation, e.g. deformation and shear bands. On subsequent recrystallisation, the deformation zones may act as sites for recrystallisation (PSN). The orientation of the deformation zones may thus have an influence on the recrystallisation texture even if thevolumefraction of particles is quite small. Thispaperwill briefly reviewsome recent theoretical and experimentalwork on the plasticity of particle-containing polycrystals and will extend this to the annealing behaviour of these materials.