The migration of irradiation-produced point defects to a crack in hexagonal close-packed material under mode-I loading conditions was studied. Random diffusion processes, and the effect of the long-range elastic field of the crack, were considered. A discrete model for the material, and numerical methods, were used. The crack was considered to be an isolated defect, and fictitious sink strengths for vacancies and interstitials were defined for the crack tip and crack surfaces. The dependences of these fictitious sink strengths upon the anisotropy diffusivity ratio were studied.

Cracks as Sink of Irradiation Created Point Defects. A.Sarce: Journal of Nuclear Materials, 2001, 288[2-3], 130–6