Diffusion processes near triple joints of special grain boundaries

Diffusion processes are studied near triple joints of special grain boundaries, whose dilatation field is modeled by a wedge disclination. An exact analytic solution of the diffusion equation in the stress field produced by the structural defect considered is obtained. The results of the theoretical analysis are used to determine the concentration field of point defects near triple joints of special grain boundaries in a polycrystal. Fiz. Tverd. Tela (St. Petersburg) 41, 64–67 (January 1999)