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Type: Artigo de periódico
Title: The columnar to equiaxed transition during solidification of Sn-Pb alloys
Author: Siqueira, CA
Cheung, N
Garcia, A
Abstract: In the present article, some important trends are shown regarding the influence of solidification thermal parameters on the columnar to equiaxed transition (CET) during the unsteady state solidification of Sn-Pb alloys. A comparison of the results obtained in the present work with results from the literature concerning similar experiments, but undertaken under conditions of lower heat transfer efficiency at the metal-mold interface, has shown that a realistic CET criterion should be based on a critical cooling rate at the dendrite tips of about 0.014 K/s, which depends only on the alloy system. The effects of melt superheat, solute concentration and metal-mold heat transfer coefficient on the CET position are also investigated. (C) 2002 Elsevier Science B.V. All rights reserved.
Subject: alloys
Country: Suíça
Editor: Elsevier Science Sa
Citation: Journal Of Alloys And Compounds. Elsevier Science Sa, v. 351, n. 41671, n. 126, n. 134, 2003.
Rights: fechado
Identifier DOI: 10.1016/S0925-8388(02)01026-5
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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