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Type: Artigo de periódico
Title: Microstructure and metastalble phase formation in a rapidly solidified Ni-Si eutectic alloy using a melt-spinning technique
Author: Dutra, AT
Milenkovic, S
Kiminami, CS
Santino, AM
Goncalves, MC
Caram, R
Abstract: In the Ni-Si system, the eutectic structure composed of Ni-Ni3Si presents inherent thermal stability, allowing composite materials to be obtained with well-aligned and finely dispersed microstructures. The work reported here consisted of an investigation into the microstructure and morphology of such a eutectic alloy from the standpoint of its growth conditions. A Ni-Si eutectic alloy was processed by applying the directional solidification method at low growth rates and the rapid solidification technique using a melt-spinning process. The results indicate that samples processed under conditions close to equilibrium show a regular and aligned microstructure, while rapid solidification leads to an anomalous microstructure and the formation of a metastable phase. (C) 2004 Elsevier B.V. All rights reserved.
Subject: eutectic solidification
Bridgman technique
melt spinning
metastable phases
Country: Suíça
Editor: Elsevier Science Sa
Citation: Journal Of Alloys And Compounds. Elsevier Science Sa, v. 381, n. 41671, n. 72, n. 76, 2004.
Rights: fechado
Identifier DOI: 10.1016/j.jjalcom.2004.02.059
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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