Fig. 3
From: High-content ductile coherent nanoprecipitates achieve ultrastrong high-entropy alloys
Composition, morphology and structure of phases existing in the bright matrix region of 600 A. a Atomic mass contrast in atomic-resolution HAADF-STEM images revealing a distinctive nanostructure consisting of a disordered FCC matrix and ordered L12 phases with diffuse coherent interfaces. Scale bar, 2 nm. b Intensity profile along the cyan arrow marked in a showing atomic arrangement in the two phases. c, d Three-dimensional reconstruction of 63 at% Ni and 15 at% Cr isoconcentration surfaces presenting the morphologies of the ordered L12 precipitates and disordered FCC matrix, respectively. A box was selected from d to provide more details about the morphology and composition of the two phases. Scale bar, 40 nm. e, f One-dimensional concentration profiles showing the element distributions from L12 to L12 and L12 to FCC, respectively. Error bars, s.d.
