Effect of dislocation-point defect interaction on dislocation mobility and solid solution decomposition in various crystal classes

Within the framework of the anisotropic elasticity theory the influence of the dislocation-poit defects (elastic dipoles) interaction on dislocation mobility and decay of solid solutions formed by impurity and inherent point defects has been investigated. Consideration is given for the main types of dislocations and elastic dipoles allowed by the symmetry of FCC, BCC and HCP lattices. A qualitative difference between the influence of various dislocations on solid solutions decay is observed, resulting in the considerable differences in formation of physical and mechanical properties (strengthening, swelling, etc.) in various crystal structures. The controlling parameters are the lattice symmetry and the values of crystal elastic modules (the degree of elastic anisotropy). 12 refs