Effect of different solute diffusivities on precipitate coarsening in ternary alloys

Bhaskar, MS and Abinandanan, TA (2018) Effect of different solute diffusivities on precipitate coarsening in ternary alloys. In: COMPUTATIONAL MATERIALS SCIENCE, 146 . pp. 73-83.

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Abstract

According to Gibbs phase rule, ternary two phase alloys have a single degree of freedom at equilibrium at a given temperature. Thus, multiple precipitate-matrix equilibrium compositions are possible at the interface. From Philippe-Voorhees' (PV) theory (Philippe and Voorhees, 2013), it is known that during coarsening in multicomponent alloys, precipitate-matrix compositions at the interface during coarsening are not just dependent on the Gibbs-Thomson effect but also on the relative mobilities of the solute elements. Our computer simulations, based on a phase field model, show that this effect of different solute diffusivities on size-dependent particle composition is more pronounced in alloys richer in the slower diffusing solute. (C) 2018 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	COMPUTATIONAL MATERIALS SCIENCE
Publisher:	ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Additional Information:	Copy right for the article belong to ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	11 Apr 2018 19:58
Last Modified:	14 Feb 2019 06:34
URI:	http://eprints.iisc.ac.in/id/eprint/59505

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