Heat Capacity and Thermodynamic Functions of the Aluminum Alloy AlCu4.5Mg1 Alloyed with Barium

IF 1 4区物理与天体物理 Q4 PHYSICS, APPLIED High Temperature Pub Date : 2024-03-21 DOI:10.1134/s0018151x2305005x

I. N. Ganiev, R. S. Shonazarov, A. Elmurod, U. N. Faizulloev

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Abstract

The results of the experimental determination of the heat capacity of the aluminum alloy AlCu4.5Mg1 alloyed with barium and the calculation of the temperature dependences of changes in the thermodynamic functions of this alloy are presented. Studies of the temperature dependence of the heat capacity of the AlCu4.5Mg1 alloy alloyed with barium are carried out in the cooling mode using a computer and the Sigma Plot 10.0 software. The types of polynomials of the temperature dependence of the heat capacity and changes in thermodynamic functions (enthalpy, entropy, and Gibbs energy) of the studied alloy and the standard (Al grade A5N), which describe these changes with the correlation coefficient R_cor = 0.999, are established. It is shown that with the increasing barium content, the heat capacity of the original alloy decreases. The enthalpy and entropy of the AlCu4.5Mg1 alloy alloyed with barium increase with increasing temperature, and decrease with the increasing barium content. The Gibbs energy values have an inverse relationship.

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与钡合金化的铝合金 AlCu4.5Mg1 的热容量和热力学函数

摘要本文介绍了铝合金 AlCu4.5Mg1 与钡合金热容量的实验测定结果，以及该合金热力学函数变化随温度变化的计算结果。在冷却模式下，使用计算机和 Sigma Plot 10.0 软件对 AlCu4.5Mg1 钡合金热容量的温度依赖性进行了研究。确定了所研究合金和标准合金（Al 牌号 A5N）的热容量和热力学函数（焓、熵和吉布斯能）变化随温度变化的多项式类型，描述这些变化的相关系数 Rcor = 0.999。结果表明，随着钡含量的增加，原始合金的热容量降低。AlCu4.5Mg1 钡合金的焓和熵随着温度的升高而增加，随着钡含量的增加而减少。吉布斯能值呈反比关系。

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来源期刊

High Temperature 物理-物理：应用

CiteScore

1.50

自引率

40.00%

发文量

审稿时长

4-8 weeks

期刊介绍： High Temperature is an international peer reviewed journal that publishes original papers and reviews written by theoretical and experimental researchers. The journal deals with properties and processes in low-temperature plasma; thermophysical properties of substances including pure materials, mixtures and alloys; the properties in the vicinity of the critical point, equations of state; phase equilibrium; heat and mass transfer phenomena, in particular, by forced and free convections; processes of boiling and condensation, radiation, and complex heat transfer; experimental methods and apparatuses; high-temperature facilities for power engineering applications, etc. The journal reflects the current trends in thermophysical research. It presents the results of present-day experimental and theoretical studies in the processes of complex heat transfer, thermal, gas dynamic processes, and processes of heat and mass transfer, as well as the latest advances in the theoretical description of the properties of high-temperature media.