Research Data Supporting "Spinodal decomposition and discontinuous precipitation in a low‑solvus Au‑Pt‑Pd alloy: an in situ X‑ray diffraction study"

Zip folder containing synchrotron X-ray diffraction patterns (.xye files), scanning electron microscopy and scanning transmission electron microscopy images (.png files), selected area diffraction patterns (.tif and .dm4 files), atom probe tomography measurements (.csv files), and thermodynamic modelling data (.txt and .png files) associated with a study of the ageing response of Au-32Pt-24Pd (at.%). Diffraction patterns were collected from the ID22 beamline at the European Synchrotron Radiation Facility at room temperature and during thermal exposures as described in the file names. Data are partitioned into bins of 0.002 degrees. Scanning electron microscopy images were collected in backscattered electron mode, along with corresponding energy dispersive X-ray elemental intensity maps with an acceleration voltage of 20 kV. Scanning transmission electron microscopy images, selected area electron diffraction patterns, and corresponding energy dispersive X-ray elemental intensity maps were acquired with an acceleration voltage of 200 kV. Atom probe tomography data are presented as radial concentration profiles from reference Ni atoms. Thermodynamic modelling data are presented as ternary isothermal sections (.png files) of phase diagrams and calculated phase fractions (.txt files) for different combinations of composition and temperature.