Thermodynamics of liquid Al-Fe alloys

O. Akinlade, R. N. Singh, F. Sommer

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

We have used a complex formation model to study chemical short range order due to atomic level interactions in liquid Al-Fe alloys. Assuming the existence of a complex of the form FeAl3, we use the model to deduce information on thermodynamic properties of the alloy such as the Gibbs free energy of mixing, the thermodynamic activity and the enthalpy of mixing. In our approach, we first model the Gibbs free energy in terms of interaction parameters. Subsequently, we use the parameters to describe properties such as the concentration- concentration fluctuations in the long wavelength limit, the Warren-Cowley short range order parameter and the chemical diffusion. Underlying the present calculations is the fact that for Al-Fe liquid alloys, a reasonable degree of chemical short range order although of a weak nature persists throughout the whole concentration range.

Original languageEnglish
Pages (from-to)163-168
Number of pages6
JournalJournal of Alloys and Compounds
Volume299
Issue number1-2
DOIs
Publication statusPublished - Mar 14 2000

ASJC Scopus subject areas

  • Metals and Alloys

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