High temperature deformation of octachloropropane: Dynamic grain growth and lattice reorientation

Dynamic grain growth and lattice preferred orientation development in octachloropropane polycrystals simple-sheared at 0.8 Tm using synkinematic microscopy are discussed. Both soft and hard grains are observed to grow. It is suggested that globular grains are not necessarily an indicator of coaxial deformation. Strain heterogeneity is induced by partitioning of deformation into relatively increased components of rigid-body rotation in hard grains and strain in soft grains. With dominant grain rotation, similar lattice preferred orientation to that of a single-slip model is introduced although the unlocking process is different.