Abstract
The correction to the equation of state that is related to the nonergodicity of diffusion dynamics is discussed for a binary solid solution with a limited solubility. It is asserted that, apart from standard thermodynamic variables (temperature, volume, concentration), this correction should be taken into account in the form of the average local chemical potential fluctuations associated with microheterogeneity in order to plot a phase diagram. It is shown that a low value of this correction lowers the miscibility gap and that this gap splits when this correction increases. This situation is discussed for eutectic systems and Ga–Pb, Fe–Cu, and Cu–Zr alloys.
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Original Russian Text © L.D. Son, V.E. Sidorov, P.S. Popel’, D.B. Shul’gin, 2016, published in Rasplavy, 2016, No. 2, pp. 108–117.
Articles presented on 14 Russian conference “Structure and Properties of Metal and Slag Melts” (MIShR-14, September 21‒25, 2015, Yekaterinburg).
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Son, L.D., Sidorov, V.E., Popel’, P.S. et al. Nonergodicity of microfine binary systems. Russ. Metall. 2016, 115–120 (2016). https://doi.org/10.1134/S0036029516020178
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DOI: https://doi.org/10.1134/S0036029516020178