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Thermodynamic Properties of Binary Al–Pr Alloys

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The mixing enthalpies of Al–Pr binary liquid alloys are measured in the ranges 0 < x Pr < 0.15 at 1560 K and 0.46 < x Pr < 1 at 1410–1670 K by isoperibol calorimetry. The Al–Pr binary melts are characterized by significant negative mixing enthalpies: \( \varDelta {H}_{Al- \Pr}^{{}^{min}} \) = –43.1 kJ/mol at x Pr = 0.33 (at 1500 K, extrapolation onto the range of supercooled melts). The activities of components, entropies, Gibbs energies, and liquidus curve of the Al–Pr phase diagram are evaluated using the model of ideal associated solutions.

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Authors and Affiliations

  1. Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kiev, Ukraine

    M. O. Shevchenko, V. V. Berezutskii, M. I. Ivanov & V. S. Sudavtsova

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  1. M. O. Shevchenko
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  2. V. V. Berezutskii
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  3. M. I. Ivanov
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  4. V. S. Sudavtsova
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Correspondence to M. O. Shevchenko.

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Translated from Poroshkovaya Metallurgiya, Vol. 55, Nos. 1–2 (507), pp. 104–118, 2015.

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Shevchenko, M.O., Berezutskii, V.V., Ivanov, M.I. et al. Thermodynamic Properties of Binary Al–Pr Alloys. Powder Metall Met Ceram 55, 78–90 (2016). https://doi.org/10.1007/s11106-016-9783-2

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  • DOI: https://doi.org/10.1007/s11106-016-9783-2

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