Simulation of self-point defect diffusion in elastic fields of edge and screw dislocations in slip systems <111> {110}, <111> {112}, <100> {100}, <100> {110} at 293 to 1000K was performed by the object kinetic Monte Carlo method for bcc iron and vanadium crystals with dislocation density ∼3 x 1014/m2. Interaction energies of self-point defects (elastic dipoles) with dislocations were calculated by means of the anisotropic theory of elasticity. These elastic interactions significantly changed dislocation sink efficiencies. Dislocation sink efficiencies decrease as the temperature increased and tended to the limit value for linear sink without interaction field. The dislocations were more efficient sinks for self-interstitial atoms than for vacancies. The difference between the sink efficiencies for self-interstitial atoms and vacancies was several times less for screw dislocations than for edge dislocations.

Kinetic Monte-Carlo Simulation of Self-Point Defect Diffusion in Dislocation Elastic Fields in BCC Iron and Vanadium. A.B.Sivak, V.M.Chernov, V.A.Romanov, P.A.Sivak: Journal of Nuclear Materials, 2011, 417[1-3], 1067-70