Thermodynamics of solid and liquid aluminium
https://doi.org/10.21122/1683-6065-2021-3-74-77
Abstract
Based on thermodynamic calculations, it is shown that in the temperature range of 298–1273 K, heating and cooling of aluminum are thermodynamically equilibrium processes. When aluminum is heated, the molar volume energy of Gibbs decreases and the molar boundary energy of nanocrystals increases. When aluminum is cooled, the molar volume energy of Gibbs increases and the molar boundary energy of nanocrystals decreases. Liquid aluminum is a nanostructured system. Dendritic microcrystals are formed from nanocrystals. They play a large role in the processes of changing the structure of aluminum during its heating and cooling.
Keywords
aluminum,
nanocrystals,
crystallization,
thermodynamics,
Gibbs energy,
boundary energy,
enthalpy,
entropy
About the Authors
E. I. Marukovich
Institute of Technology of Metals of National Academy of Sciences of Belarus
Belarus
Mogilev, Belarus, 11, Bialynitskogo‑Biruli str.
Belarus
Mogilev, Belarus, 11, Bialynitskogo‑Biruli str.
V. Yu. Stetsenko
Institute of Technology of Metals of National Academy of Sciences of Belarus
Belarus
Mogilev, Belarus, 11, Bialynitskogo‑Biruli str.
Belarus
Mogilev, Belarus, 11, Bialynitskogo‑Biruli str.
A. V. Stetsenko
Belarusian‑Russian University
Belarus
Mogilev, Belarus, 43, Mira ave.
Belarus
Mogilev, Belarus, 43, Mira ave.
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Review
For citations:
Marukovich E.I., Stetsenko V.Yu., Stetsenko A.V. Thermodynamics of solid and liquid aluminium. Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY). 2021;(3):74-77. (In Russ.) https://doi.org/10.21122/1683-6065-2021-3-74-77
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