Abstract
Specimen size effect in diffusion induced grain boundary migration (DIGM), diffusion induced recrystallization (DIR) and recrystallization induced diffusion (RID) was studied. The Fisher model of grain boundary diffusion was used, provided the total diffusive impurity flux is reflected from the lower side of film. The limits of grain-boundary migration rates, for which this model is valid, were estimated. The threshold character of DIGM, DIR and RID was shown. Manifestations of specimen size effect of DIGM, DIR and RID below some critical thickness were discussed.
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