Fig. 4: The microstructure characterization of Alloy 1–2 after annealing at 1000 °C for 50 h. | npj Computational Materials

Fig. 4: The microstructure characterization of Alloy 1–2 after annealing at 1000 °C for 50 h.

From: Machine learning assisted design of γ′-strengthened Co-base superalloys with multi-performance optimization

Fig. 4

a STEM HAADF image and elemental mapping for the γ/γ′ precipitate using an STEM nanoprobe. b APT three-dimensional reconstruction. c A proximity histogram concentration profile of major elements across the γ/γ′ interface based from the APT sample reconstruction. d Partitioning coefficients of solute elements. The yellow bars represent the elements that preferentially distribute in the γ′ phase (\(K_{\gamma \prime /\gamma }^X\) > 1), and the purple bars represent the elements that partition strongly to the γ phase (\(K_{\gamma \prime /\gamma }^X\) < 1).

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