Journal
JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION
Volume 27, Issue 1, Pages 5-13Publisher
ASM INTERNATIONAL
DOI: 10.1361/105497196X92736
Keywords
compound energy formalism; pair interactions; short range ordering
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A CALPHAD assessment of the Cu-Pt system has been carried out. Two and four sublattice models were applied to describe the Gibbs free energies of ordered phases where the contribution of SRO is taken explicitly into account through the reciprocal parameters. The disordered fcc A1 and liquid phases were treated as substitutional solutions. A consistent set of parameters for the phases in the Cu-Pt system as obtained, and those parameters can satisfactorily reproduce the experimental phase equilibria and thermodynamic properties, such as enthalpies, activity of Cu, and long-range order parameters.
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