Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/241574
Type: Artigo de periódico
Title: Application Of Computational Thermodynamics To The Determination Of Thermophysical Properties As A Function Of Temperature For Multicomponent Al-based Alloys
Author: Nascimento
Fabiana C.; Paresque
Mara C. C.; de Castro
Jose A.; Jacome
Paulo A. D.; Garcia
Amauri; Ferreira
Ivaldo L.
Abstract: Despite the technological importance of Al-Si-Cu alloys in manufacturing processes involving heat transfer, such as welding, casting and heat treatment, thermophysical properties of this system of alloys are very scarce in the literature. In this paper, a model connected to a computational thermodynamics software is proposed permitting density and specific heats as a function of temperature and enthalpy of transformations to be numerically determined. The model is pre-validated against experimental density as a function of temperature for liquid and solid phases of A319 and 7075 alloys found in the literature and validated against experimental density values for the solid phase of an Al-6 wt%Cu-1 wt%Si alloy determined in the present study. In both cases the numerical predictions are in good agreement with the experimental results. Specific heat and temperatures and heats of transformation are also numerically determined for this ternary Al-based alloy. (C) 2015 Elsevier B.V. All rights reserved.
Subject: Thermo-physical-properties
Cu-si Alloy
Transient Solidification
Numerical-model
Microstructure
Aluminum
Macrosegregation
Parameters
Spacings
Metals
Country: AMSTERDAM
Editor: ELSEVIER SCIENCE BV
Citation: Application Of Computational Thermodynamics To The Determination Of Thermophysical Properties As A Function Of Temperature For Multicomponent Al-based Alloys. Elsevier Science Bv, v. 619, p. 1-7 Nov-2015.
Rights: embargo
Identifier DOI: 10.1016/j.tca.2015.09.013
Address: http://www.sciencedirect.com/science/article/pii/S004060311500369X
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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