Open AccessВлияние флуктуаций на образование выделений вторых фаз на границах зерен
Author(s) -
П.Е. Львов,
В. В. Светухин
Publication year - 2019
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2019.02.47138.232
Subject(s) - grain boundary , thermodynamics , spinodal decomposition , materials science , kinetics , grain size , phase (matter) , chemistry , microstructure , physics , metallurgy , classical mechanics , organic chemistry
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.