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3D Growth Kinetics of Precipitates with Anisotropic Interfacial Free Energy: A Phase-Field Study

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Title 3D Growth Kinetics of Precipitates with Anisotropic Interfacial Free Energy: A Phase-Field Study
 
Creator ROY, A
GURURAJAN, MP
 
Subject EVOLUTION
MODELS
Phase field modelling
Precipitate growth kinetics
Anisotropic interfacial free energy
Microstructural evolution
 
Description In this study, we report on the 3D growth kinetics of an isolated beta precipitate growing from a supersaturated alpha matrix. The alpha-beta interfacial energy is assumed to be cubic anisotropic; specifically, either (100) or (111) interfaces are preferred. The diffusivity is maintained a constant in our model; this constant diffusivity is achieved through a combination of Cahn-Hilliard and Allen-Cahn equations (with appropriate choice of model free energy parameters). Our results indicate that depending on the matrix supersaturation, the growth modes can either be shape preserving or non-shape preserving. In the case of shape preserving growth, we are able to verify, that as indicated by the earlier theoretical studies, the classical Zener-Frank theories can be used to predict the growth rates of precipitates.
 
Publisher SPRINGER INDIA
 
Date 2016-01-14T12:46:02Z
2016-01-14T12:46:02Z
2015
 
Type Article
 
Identifier TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, 68(2SI)S177-S183
0972-2815
0975-1645
http://dx.doi.org/10.1007/s12666-015-0558-0
http://dspace.library.iitb.ac.in/jspui/handle/100/17532
 
Language en