Lattice compatibility at interfaces after recrystallisation

Abstract

The nature, distribution, and implications of local, i.e. intragrain, lattice rotations have been explored in recrystallised nickel using electron backscattered diffraction. The data processing methodology for such methods is discussed in some detail. The results reveal that orientation perturbations with a periodicity of ∼1 μm occur frequently within grains, and that there is a strong tendency for two grains which feature either both large perturbations or both small perturbations to be neighbours. The results are interpreted in terms of lattice compatibility, potential sites for instigation of secondary recrystallisation, and the meaningful specification of grain boundary misorientation.