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- W2893800769 abstract "Abstract Precipitation-hardening high-entropy alloys (PH-HEAs) with good strength−ductility balances are a promising candidate for advanced structural applications. However, current HEAs emphasize near-equiatomic initial compositions, which limit the increase of intermetallic precipitates that are closely related to the alloy strength. Here we present a strategy to design ultrastrong HEAs with high-content nanoprecipitates by phase separation, which can generate a near-equiatomic matrix in situ while forming strengthening phases, producing a PH-HEA regardless of the initial atomic ratio. Accordingly, we develop a non-equiatomic alloy that utilizes spinodal decomposition to create a low-misfit coherent nanostructure combining a near-equiatomic disordered face-centered-cubic (FCC) matrix with high-content ductile Ni 3 Al-type ordered nanoprecipitates. We find that this spinodal order–disorder nanostructure contributes to a strength increase of ~1.5 GPa (>560%) relative to the HEA without precipitation, achieving one of the highest tensile strength (1.9 GPa) among all bulk HEAs reported previously while retaining good ductility (>9%)." @default.
- W2893800769 created "2018-10-05" @default.
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- W2893800769 date "2018-10-03" @default.
- W2893800769 modified "2023-10-17" @default.
- W2893800769 title "High-content ductile coherent nanoprecipitates achieve ultrastrong high-entropy alloys" @default.
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- W2893800769 doi "https://doi.org/10.1038/s41467-018-06600-8" @default.
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