Fig. 1: Characterization of the CrCoNi samples prepared by water-quench and heat-treatment.

a Neutron-diffraction patterns, showing the presence of the single fcc phase in both samples. b The measured tensile stress-strain up to fracture at the strain rate of 1 × 10−3 s−1. c, e Energy-filtered electron-diffraction patterns and d, f atomic-resolution STEM images. The insets in d, f are power spectra of the images. The diffraction patterns in c, e are displayed in the color scale for the intensities between 0 and 30, in digital counts.