Influence of Lithium on Specific Heat and Changes in the Thermodynamic Functions of Aluminum Alloy AB1

In this study, we have determined the specific heat of an aluminum alloy AB1 (Al + 1 wt % Be) with lithium in cooling mode from the known specific heat of a reference copper sample. Equations that describe the cooling rates of samples of AB1 alloy with lithium and a reference are obtained. The tempe...

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Bibliographic Details
Published in:High temperature 2020, Vol.58 (1), p.58-63
Main Authors: Ganiev, I. N., Nazarova, M. T., Yakubov, U. Sh, Safarov, A. G., Kurbonova, M. Z.
Format: Article
Language:English
Subjects:
Alloys
Aluminum alloys
Aluminum base alloys
Atoms and Molecules in Strong Fields
Classical and Continuum Physics
Cooling
Cooling rate
Enthalpy
Entropy
Industrial Chemistry/Chemical Engineering
Laser Matter Interaction
Lithium
Materials Science
Mathematical analysis
Physical Chemistry
Physics
Physics and Astronomy
Specific heat
Thermophysical Properties of Materials
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Summary:In this study, we have determined the specific heat of an aluminum alloy AB1 (Al + 1 wt % Be) with lithium in cooling mode from the known specific heat of a reference copper sample. Equations that describe the cooling rates of samples of AB1 alloy with lithium and a reference are obtained. The temperature dependences of the specific heat of the alloys and the reference are formed based on the calculated values of the cooling rates of the reference and the samples. The temperature dependences of the changes in the enthalpy, entropy, and Gibbs energy of the AB1 alloy with lithium are calculated through integration of the specific heat. The specific heat, enthalpy, and entropy of the AB1 alloy increase with increasing lithium concentration and temperature, and the Gibbs energy decreases.
ISSN:0018-151X
1608-3156
DOI:10.1134/S0018151X20020066