Pattern-Formation During Self-organization in Three-Phase Eutectic Solidification

Choudhury, Abhik (2015) Pattern-Formation During Self-organization in Three-Phase Eutectic Solidification. In: TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, 68 (6). pp. 1137-1143.

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Abstract

Eutectic growth is an interesting example for exploring the topic of pattern-formation in multi-phase systems, where the growth of the phases is coupled with the diffusive transport of one or more components in the melt. While in the case of binary alloys, the number of possibilities are limited (lamellae, rods, labyrinth etc.), their number rapidly increases with the number of components and phases. In this paper, we will investigate pattern formation during three-phase eutectic solidification using a state-of-the art phase-field method based on the grand-canonical density formulation. The major aim of the study is to highlight the role of two properties, which are the volume fraction of the solid phases and the solid-liquid interfacial energies, in the self-organization of the solid phases during directional growth. Thereafter, we will show representative phase-field simulations of a micro-structure in a real alloy (Ag-Al-Cu) using an asymmetric phase diagram as well as interfacial properties.

Item Type:	Journal Article
Publication:	TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
Publisher:	SPRINGER INDIA
Additional Information:	Copy right for this article belongs to the SPRINGER INDIA, 7TH FLOOR, VIJAYA BUILDING, 17, BARAKHAMBA ROAD, NEW DELHI, 110 001, INDIA
Keywords:	Ternary eutectic; Phase-field; CALPHAD; Pattern-formation
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	10 Dec 2015 05:53
Last Modified:	10 Dec 2015 05:53
URI:	http://eprints.iisc.ac.in/id/eprint/52865

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