Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/75065
Type: Artigo de periódico
Title: The effect of solidification thermal variables on surface quality of Al-Cu ingots
Author: Quaresma, JM
Cheung, N
Garcia, A
Abstract: A combined theoretical and experimental approach was undertaken to quantitatively determine thermal variables during solidification, i.e., transient metal/mold heat transfer coefficients, cooling rates and a driving force factor for the solidified shell distortion, given by the gradient of the cooling rate. Such thermal variables were correlated with the geometric features of the observed surface marks of Al-Cu alloys ingots in the range of pure Al and the eutectic composition. It was shown that the thermal distortion factor increases with alloy Cu content, and it is strongly dependent on the initial values of the metal/mold heat transfer coefficient. A correlation with the resulting experimental surface marks has indicated that larger depth and pitch are associated with higher thermal distortion driving forces. (c) 2006 Elsevier B.V. All rights reserved.
Subject: surface quality
Al-Cu alloys
solidification thermal variables
metat/mold heat transfer coefficient
Country: Suíça
Editor: Elsevier Science Sa
Rights: fechado
Identifier DOI: 10.1016/j.jallcom.2006.03.054
Date Issue: 2007
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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