Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101805
Title: Diffusionless (chemically partitionless) crystallization and subsequent decomposition of supersaturated solid solutions in Sn-Bi eutectic alloy
Authors: Gusakov, O. V.
Galenko, P. K.
Shepelevich, V. G.
Alexandrov, D. V.
Rettenmayr, M.
Issue Date: 2019
Publisher: Royal Society Publishing
Citation: Diffusionless (chemically partitionless) crystallization and subsequent decomposition of supersaturated solid solutions in Sn-Bi eutectic alloy / O. V. Gusakov, P. K. Galenko, V. G. Shepelevich, et al. — DOI 10.1098/rsta.2018.0204 // Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. — 2019. — Vol. 377. — Iss. 2143. — 20180204.
Abstract: Results of a study on microstructural evolution of eutectic Sn-57wt.% Bi processed with cooling rates of 10-2, 1Ks-1 and approximately 105 Ks-1 are presented. In order to distinguish different mechanisms of microstructure formation, a comparison with microstructures of different hypoeutectic alloys with compositions down to below the maximum solubility of Bi in Sn-Bi is undertaken. It is found that at the cooling rates of 10-2 and 1Ks-1, coupled eutectic growth occurs, leading to lamellar structures with different length scales. At the rapid quenching rates of approximately 105 Ks-1, structure formation in the eutectic alloy is qualitatively different. Partitionless solidification resulting in a supersaturated solid solution with the initial composition is observed in both eutectic and hypoeutectic alloys. It is shown that the observed microstructure of the rapidly solidified alloys forms by the decomposition of the supersaturated solid solution. This article is part of the theme issue 'Heterogeneous materials: Metastable and non-ergodic internal structures'. ©2019 The Author(s) Published by the Royal Society.
Keywords: DECOMPOSITION
EUTECTIC STRUCTURE
GRAIN BOUNDARY MIGRATION
RAPID SOLIDIFICATION
BINARY ALLOYS
BISMUTH ALLOYS
COOLING
DECOMPOSITION
EUTECTICS
GRAIN BOUNDARIES
LAMELLAR STRUCTURES
RAPID SOLIDIFICATION
SOLID SOLUTIONS
TERNARY SYSTEMS
DIFFERENT LENGTH SCALE
DIFFERENT MECHANISMS
EUTECTIC STRUCTURES
GRAIN BOUNDARY MIGRATIONS
HETEROGENEOUS MATERIALS
MICROSTRUCTURE FORMATION
STRUCTURE FORMATIONS
SUPERSATURATED SOLID SOLUTIONS
TIN ALLOYS
URI: http://hdl.handle.net/10995/101805
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85062388253
PURE ID: 9063894
0146caca-a319-4a45-80b5-adc27954b754
ISSN: 1364503X
DOI: 10.1098/rsta.2018.0204
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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