This article is cited in 2 papers

Phase transitions

Effect of fluctuations on the formation of secondary phase precipitates at grain boundaries

P. E. L’vov^a, V. V. Svetukhin<sup>ab

a</sup> Ulyanovsk State University
^b Institute of Nanotechnologies of Microelectronics, Russian Academy of Sciences, Moscow, Russia

Abstract: Based on the free energy density functional method (modified Cahn–Hillard–Cook equation), the formation kinetics of secondary phases in binary alloys is considered in the presence of composition fluctuations and with inclusion of the grain boundaries influences. It is revealed that the existence of grain boundaries and the fluctuations at the initial stage of the phase transition can lead to the appearance of anomalous growth rate of the average precipitate size due to a competition of various decomposition mechanisms.

Received: 13.08.2018
Revised: 19.09.2018

DOI: 10.21883/FTT.2019.02.47138.232

 English version: Physics of the Solid State, 2019, 61:2, 225–232

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