Fig. 1a: X-ray diffraction pattern, 2Theta Angle in ° and intensity in 1 Fig. 1b: Differential scanning calorimetry data, temperature in °C and temperature derivative of enthalpy in J/(K g) as *.xlsx files Fig. 1c: Electron backscatter diffraction data as *.osc TSL/EDAX file Fig. 1d and e: Backscattered electron contrast micrographs as *.tiff files Fig. 2: Backscattered electron contrast micrographs as *.tiff files Fig. 3: Atom probe tomography data as Cameca raw files Fig. 4: Scatter data, time in h and radius in nm as well as relative solvus temperaure in 1 and coarsening rate in nm³/h Fig. 5: Secondary electron contrast micrographs as *.tiff files