To enrich the existing knowledge of the thermodynamic properties of the Cu–Mg system, complementary experimental and theoretical investigations were conducted. A comprehensive set of thermodynamic data required for the determination of phase equilibria in the Cu–Mg system was obtained by combining both approaches. The experimental work included alloy preparation as well as structural and calorimetric analyses, while the theoretical part comprised ab initio and CALPHAD calculations. All methodologies and results are discussed in detail in this article.
The provided data set contains the results of the experimental part of the article and a set of thermodynamic parameters:
1. The *.txt files with column headers Index Time (h) Furnace Temperature (°C) Sample Temperature (°C) Heat Flow (µV) contain calorimetric data of the limiting partial enthalpy of solution of liquid Cu in tin and aluminum bath, and data of the formation enthalpy measurements in tin and aluminum bath.
2. Fig_2c_XRD_Cu2Mg.xy and Fig_3c_XRD_CuMg2.xy files are XRD diffraction patterns for alloys used for the enthalpy of formation measurements.
3. Fig_2a_BSE_Cu2Mg.tiff, Fig_3a_BSE_CuMg2.tiff, and Fig_4a_BSE_CuMg2_after_annealing.tiff files are SEM images of alloys used for the enthalpy of formation measurements.
4. The Tab_12_thermodynamic_parameters file contains the thermodynamic parameters obtained and used for the phase diagram calculations.
This work is supported by the National Science Centre, Poland, for funding project no. 2021/43/O/ST8/01291 entitled “Thermodynamic properties and structure of Cu-Mg-Ti and Ag-Mg-Ti alloys and their potential to interact with hydrogen” in the years 2022–2027.
