Recently, eutectic high-entropy alloys (EHEAs) have attracted considerable attention owing to their outstanding mechanical properties and excellent castability. However, EHEA design remains a huge challenge. Traditional grouping design strategies excessively depend on the reported alloy composition. Meanwhile, the quantitative boundary conditions of grouping strategies remain unclear. This work proposes a grouping strategy via the d-orbit energy level (Δ M d i j) to design EHEAs. The Δ M d i j model was an extension of the grouping strategy, which did not require the existing alloy composition and provided a clear boundary condition for grouping the component elements. Accordingly, (CoFe2NiV0.5Mo0.2)91Zr9 EHEA with nanostructured fully eutectic morphology was designed and prepared by direct solidification. This work provided a perspective to advance the understanding of grouping design strategies for EHEAs and make it possible to design the composition of EHEAs on a large scale.
CITATION STYLE
Li, T., Lu, Y., Wang, T., & Li, T. (2021). Grouping strategy via d-orbit energy level to design eutectic high-entropy alloys. Applied Physics Letters, 119(7). https://doi.org/10.1063/5.0061641
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