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Simultaneous Prediction of Morphologies of a Critical Nucleus and an Equilibrium Precipitate in Solids

Simultaneous Prediction of Morphologies of a Critical Nucleus and an Equilibrium Precipitate in Solids
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Year:    2010

Communications in Computational Physics, Vol. 7 (2010), Iss. 4 : pp. 674–682

Abstract

We investigate the critical nucleus and equilibrium morphologies during precipitation of a second-phase particle in a solid. We show that a combination of diffuse-interface description and a constrained string method is able to predict both the critical nucleus and equilibrium precipitate morphologies simultaneously without a priori assumptions. Using the cubic to cubic transformation as an example, it is demonstrated that the maximum composition within a critical nucleus can be either higher or lower than that of equilibrium precipitate while the morphology of an equilibrium precipitate may exhibit lower symmetry than the critical nucleus resulted from elastic interactions.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/cicp.2009.09.099

Communications in Computational Physics, Vol. 7 (2010), Iss. 4 : pp. 674–682

Published online:    2010-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    9

Keywords:   

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