Features of the formation of the submicrocrystalline structural state upon plastic deformation of a V-4Ti-4Cr alloy in Bridgman anvils

Results are presented of electron-microscopic investigations of the main features of the microstructure of an V-4Ti-4Cr alloy after severe plastic deformation by high-pressure torsion in Bridgman anvils. Parameters of the defect structure in the bulk and at the boundaries of grains have been studied using the method of dark-field analysis of discrete and continuous misorientations. Fields of local internal stresses and gradients of these stresses on the submicron level have been analyzed. Mechanisms of the formation of the submicrocrystalline structural state have been discussed.