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Kinetics of alloy decomposition taking into account solid-phase wetting of the grain boundary
Russian version
Rasumov I.K.1
1M.N. Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia
Email: rik@imp.uran.ru
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Using the Monte Carlo method, the combined influence of grain boundary segregations and the interaction between the grain boundary and the interphase boundary on the equilibrium shape of precipitates and the kinetics of alloy decomposition has been investigated. It has been shown that these mechanisms primarily act in a qualitatively similar manner, leading to partial wetting (coating) of the grain boundary, as well as phase transitions analogous to complete wetting and pre-wetting of the grain boundary with temperature changes. Thus, it has been established that, in general, when quantitatively analyzing the phenomenon of solid-phase wetting of grain boundaries, it is necessary to consider the contribution to the energy responsible for the interaction between the interphase boundary and the grain boundary, which has previously been rarely taken into account in kinetic approaches. Keywords: grain boundary, alloy decomposition, Monte Carlo simulation, solid-phase wetting.
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