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- W4376110956 abstract "Alloy composition design at the atomic scale is one of the key strategies for Ni-based single crystal superalloys (Ni-SCSs). In this article, the site preference of co-alloying elements Re-M (M: Cr, Mo, W or Re) in Ni3Al system and the strengthening effects of co-alloying elements on the shear deformation resistance of Ni3Al system are investigated using the first-principles method. It is found that the atom pairs of co-alloying elements prefer Al–Al site and the site preference of alloying elements is not affected by paired atoms. And co-alloying atom pairs occupying Ni–Ni site have a strong mutual interaction, which can be responsible for the formation of Re clusters and segregation of alloying elements. The ideal shear strength (ISS) of the quaternary Ni3Al system enhanced greatly by co-alloying elements is at least higher 11.9% than that of any Ni3Al system doped with single alloying elements, which indicates there are common effect among the co-alloying elements. The result of electronic structures shows that the strong interaction between the alloy atoms and their common the first nearest neighbors (FNN) Ni atoms is the common strengthening mechanism. The present article provides valuable guidelines for improving the mechanical strength of Ni-SCSs via alloy composition design." @default.
- W4376110956 created "2023-05-12" @default.
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- W4376110956 date "2023-03-24" @default.
- W4376110956 modified "2023-09-25" @default.
- W4376110956 title "Site preference and effect on shear deformation of co-alloying elements addition to γ′-Ni<sub>3</sub>Al phase in Ni-based single crystal superalloys" @default.
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- W4376110956 doi "https://doi.org/10.1080/10584587.2023.2191509" @default.
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