Phase transformation behavior in nanoalloys

Tiwari, K and Manolata Devi, M and Biswas, K and Chattopadhyay, K (2021) Phase transformation behavior in nanoalloys. In: Progress in Materials Science .

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Abstract

Nanomaterials are now well established as a distinct class of materials. Among them, the nanoparticles of metals and alloys constitute an important subclass that has attracted wide attention from the point of view of scientific understanding and wide domain of potential applications. The present review primarily deals with alloy nanoparticles or nanoalloys containing more than one element having single or multiphase microstructure. Both free, as well as embedded alloy nanoparticles, will be considered. The physical and chemical properties of nanoalloys can be tuned by manipulating the type of metals, their compositions, and the degree of the atomic arrangement, shape, and size. These are often controlled by phase transformation. The present article reviews the recent advances in phase transformation behaviour of the alloy nanoparticles by focussing on the single and biphasic alloy of free and embedded nanoparticles; the effect of size, shape, and chemical order on the phase transformation and alloying at the nanoscale. Particular emphasis will be on melting, solidification, and order-to-disorder transformation, taking into account the extensive and detailed theoretical analysis available using thermodynamics and kinetics. Wherever needed, we shall compare free and embedded nanoparticles and invoke the results of elemental metal nanoparticles to highlight the similarities and differences. Towards the end, the unresolved issues and future directions of research on nanoalloys will be deliberated. © 2021 Elsevier Ltd

Item Type:	Journal Article
Publication:	Progress in Materials Science
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to Elsevier Ltd
Keywords:	Metal nanoparticles; Metallurgy; Thermodynamics, Alloy nanoparticle; Atomic arrangement; Embedded nanoparticles; Multiphase microstructure; Order-to-disorder transformation; Phase transformation behavior; Physical and chemical properties; Thermodynamics and kinetics, Phase transitions
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	12 Jul 2021 10:13
Last Modified:	12 Jul 2021 10:13
URI:	http://eprints.iisc.ac.in/id/eprint/68827

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