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Precipitate growth with composition-dependent diffusivity: Comparison between theory and phase field simulations

Mukherjee, R and Abinandanan, TA and Gururajan, MP (2010) Precipitate growth with composition-dependent diffusivity: Comparison between theory and phase field simulations. In: Scripta Materialia, 62 (2). pp. 85-88.

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Official URL: http://dx.doi.org/10.1016/j.scriptamat.2009.09.030

Abstract

We consider the growth of an isolated precipitate when the matrix diffusivity depends on the composition. We have simulated precipitate growth using the Cahn-Hilliard model, and find good agreement between our results and those from a sharp interface theory for systems with and without a dilatational misfit. With misfit, we report (and rationalize) an interesting difference between systems with a constant diffusivity and those with a variable diffusivity in the matrix.

Item Type: Journal Article
Additional Information: copyright of this article belongs to Elsevier Science.
Keywords: Phase field modeling;Phase transformation kinetics; Precipitation.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 09 Jan 2010 09:34
Last Modified: 22 Feb 2012 08:16
URI: http://eprints.iisc.ernet.in/id/eprint/25298

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