The Al–Cu binary system has been investigated intensively in the past as key binary system for many important industrial alloys. With respect to new experimental results about phase equilibria in Al–Cu system, it was found necessary to prepare new CALPHAD-type thermodynamic description of the Al–Cu system. In course of this work, the known crystallography of several intermetallic phases and the information about site occupations in particular crystallographic positions were implemented in the new thermodynamic phase descriptions. The intermetallic phases were furthermore modelled with all their different temperature modifications. Very good agreement with the experimental results was reached both, for the Al–Cu phase diagram and for the calculated thermodynamic properties, namely the enthalpy of mixing, enthalpies of formation and thermodynamic activities.

中文翻译：

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二元Al-Cu系统的热力学重新评估

过去，Al-Cu 二元体系作为许多重要工业合金的关键二元体系得到了深入研究。关于 Al-Cu 系统相平衡的新实验结果，发现有必要准备新的 Al-Cu 系统 CALPHAD 型热力学描述。在这项工作的过程中，在新的热力学相描述中实施了几种金属间化合物相的已知晶体学和关于特定晶体位置的位点占据的信息。此外，金属间相用它们所有不同的温度修改进行建模。对于 Al-Cu 相图和计算的热力学性质，即混合焓，与实验结果非常一致，