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Thermodynamic description of the Cu-Al-Sn system in the copper-rich corner

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Abstract

Thermodynamic optimization of the Cu-Al-Sn system is made using classical thermodynamic models for describing the properties of the individual phases of the system. The optimization is limited to the copper-rich corner of the system, the gamma phase of the Cu-Al and Cu-Sn systems being the remotest phase included in the analysis. The data of the pure components and the binary systems are taken from the previously assessed Scientific Group Thermodata Europe (SGTE)-compatible descriptions, although a slight reoptimization of data is first made for the bcc, fcc, and gamma phases of the Cu-Al system and for the liquid and gamma phases of the Cu-Sn system. Next, ternary thermodynamic data are optimized for the ternary Cu-Al-Sn system using the experimental phase-equilibrium data of the literature. The results of the optimization are presented by comparing the original, experimental data with the calculations, and reasonable agreement is demonstrated.

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Miettinen, J. Thermodynamic description of the Cu-Al-Sn system in the copper-rich corner. Metall Mater Trans A 33, 1639–1648 (2002). https://doi.org/10.1007/s11661-002-0173-7

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