Thermophysical properties are very important to simulate the behavior of materials. Computer simulations are low cost as compared to what is needed for physical simulations, as far as it normally requires only a computer, a model and a computer language. However, the accuracy of numerical simulations depends on the quality of the thermophysical properties used in the prediction of physical phenomena, such as fluid flow, heat transfer, alloy solidification and solid-state phase transformations. The thermophysical properties for pure metals are widely available in the literature; nevertheless, for multicomponent metallic alloys, this is not the case. In this paper, a novel definition of non-equilibrium Gibbs–Thomson coefficient is presented, and thermodynamics calculations are carried out based on analytical and numerical approaches for the prediction of: liquidus and eutectic temperatures, equilibrium and non-equilibrium latent heats of fusion, solid–liquid surface tensions, solid and liquid densities, equilibrium and non-equilibrium Gibbs–Thomson coefficients, viscosity and surface tension as a function of temperature of quaternary Al–Si–Cu–Mg alloys.

中文翻译：

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数值和分析方法在确定Al–Si–Cu–Mg合金的热物理性质中的应用

热物理性质对于模拟材料的行为非常重要。与通常仅需要计算机，模型和计算机语言的物理模拟相比，计算机模拟的成本较低。但是，数值模拟的准确性取决于用于预测物理现象（例如流体流动，传热，合金凝固和固态相变）的热物理性质。纯金属的热物理性质在文献中可广泛获得。但是，对于多组分金属合金，情况并非如此。本文提出了非平衡吉布斯-汤姆森系数的新定义，