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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Application of computational thermodynamics to the determination of thermophysical properties as a function of temperature for multicomponent Al-based alloys

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Nascimento, Fabiana C. [1] ; Paresque, Mara C. C. [2] ; de Castro, Jose A. [1] ; Jacome, Paulo A. D. [2] ; Garcia, Amauri [3] ; Ferreira, Ivaldo L. [2]
Total Authors: 6
[1] Univ Fed Fluminense, Grad Program Met Engn, BR-27255125 Volta Redonda, RJ - Brazil
[2] Univ Fed Fluminense, Grad Program Mech Engn, BR-27255125 Volta Redonda, RJ - Brazil
[3] Univ Campinas UNICAMP, Dept Mfg & Mat Engn, BR-13083860 Campinas, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Thermochimica Acta; v. 619, p. 1-7, NOV 10 2015.
Web of Science Citations: 4

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. (AU)

FAPESP's process: 13/23396-7 - Effects of solidification MicrostructureParameters of Aluminum-based multicomponent alloys (Al-Mg-Si; Al-Sn-Cu; Al-Zn-Mg) on the resistances to Corrosionand tribocorrosion degradation
Grantee:Amauri Garcia
Support type: Regular Research Grants