Abstract
The solid solubility of Bi in Cu single crystals has been experimentally determined. It is shown that the solidus line is a retrograde curve without a monotectic transition. The solid and liquid phases are successfully described with simple thermodynamic models. The experimentally measured maximum solubility of 0.0207 at. % Bi at 975 °C correlates well with that from the model (0.0193 at. % Bi at 968 °C). A linear temperature dependence of the interchange energies is suggested, and the values of the optimized coefficients are in accordance with those estimated from the thermal expansion coefficients. The calculated thermodynamic functions are in good agreement with the assessed experimental data.
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On leave from the Institute of Solid Physics, Russian Academy of Sciences, Chernogolovka, Moscow District, 142432 Russia.
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Chang, L.S., Straumal, B.B., Rabkin, E. et al. The Solidus Line of the Cu-Bi Phase Diagram. JPE 18, 128–135 (1997). https://doi.org/10.1007/BF02665694
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DOI: https://doi.org/10.1007/BF02665694