Skip to main content
. 2020 Nov 13;6(46):eaba9543. doi: 10.1126/sciadv.aba9543

Fig. 2. Characterization of dual-nanoprecipitation of B2 and κ-carbide at atomic scales.

Fig. 2

(A) HR HAADF-STEM image showing the atomic structures of FCC austenitic (γ) matrix, B2 phase, and κ-carbide. (B) and (C) are FFT patterns confirming the structure of γ matrix and κ-carbide, respectively. (D) EDS maps of the same sample region in (A) indicate two regions belonging to the B2 phases. (E) APT results including atomic maps highlighted by iso-composition surfaces of 30 at. % Ni, 30 at. % Al, and 10 at. % C. (F) Atomic density maps of Ni and C. (G) One-dimensional compositional profiles showing the exact chemical compositions of γ matrix, κ-carbide, and B2 phase.