The energetic, crystallographic, and diffusion characteristics of self-point defects (vacancies, self-interstitial atoms) in body-centered cubic iron crystal in the absence of stress fields were obtained by the molecular statics and molecular dynamics methods. The effect of elastic stress fields of dislocations on the characteristics of self-point defects (elastic dipoles) was calculated by the methods of the anisotropic linear theory of elasticity. The self-point defects diffusion in the elastic fields of edge and screw dislocations (with Burgers vectors 1/2<111> and <100> at 293K was studied using the kinetic Monte Carlo method. The values of the self-point defects sink strength of dislocations of different types were obtained. Dislocations were more effective sinks for self-interstitial atoms than for vacancies. The difference in the sink strengths for self-interstitial atoms and vacancies in the case of edge dislocations was larger than the screw dislocations.

Diffusion of Self-Point Defects in Body-Centered Cubic Iron Crystal Containing Dislocations. A.B.Sivak, V.A.Romanov, V.M.Chernov: Crystallography Reports, 2010, 55[1], 97-108