Ordering and site occupancy of D03 ordered Fe3Al-5Â at%Cr evaluated by means of atom probe tomography

► APT measurements of Fe3Al-Cr are systematically analysed to study ordering. ► APT measurements are simulated using EAM to calculate binding energies. ► Cr occupies next nearest neighbour sites of aluminium with at least 83% ordering. ► Aluminium ordering is at least 92%