An investigation of the effect of an impurity (silver) segregating on the grain boundaries of nickel on the evolution of the structure and grain-boundary ensemble under conditions of diffusion annealing at a temperature of 823 K for 6 hours is carried out. It is shown that under these conditions the development of a diffusion-induced recrystallization (DIR) is observed in the Ni(Ag) system, in contrast to the Ni(Cu) system, in which the diffusion-induced grain boundary migration (DIGM) is observed. The estimates show that a possible reason for the negligible diffusion-induced grain-boundary migration in the Ni(Ag) system can be a significantly lower osmotic pressure value, the driving force for DIGM, than that in the Ni(Cu) system.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 7, pp. 30–35, July, 2021.
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Naydenkin, E.V., Mishin, I.P. Evolution of the Structure and Grain Boundary Ensemble of Nickel during Diffusion Annealing under Conditions a Segregating Impurity (Silver) on Grain Boundaries. Russ Phys J 64, 1205–1211 (2021). https://doi.org/10.1007/s11182-021-02445-9
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DOI: https://doi.org/10.1007/s11182-021-02445-9