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- W2980567216 endingPage "106630" @default.
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- W2980567216 abstract "The effect of niobium on microstructure and mechanical properties of Ti46Al2.6CxNb (at. %) alloys with Nb content ranging from 0 to 8 at.% have been studied. The alloys have been prepared by vacuum arc melting. The content of γ(TiAl) phase increases and content of α2(Ti3Al) phase decreases with increasing content of Nb. The lattice parameters of γ phase increase and parameters of the α2 phase remain stable when Nb content is higher than 4 at. %. There is no significant segregation of Nb in the studied Ti46Al2.6CxNb alloys. The size of lamellar colonies decreases with increasing content of Nb from 0 to 8 at. %. The increase of the lattice parameters and low segregation of Nb without formation of B2 phase are related to a higher solid solubility of Nb in the γ phase. Compressive strength and compressive strain increase with increasing content of Nb. Tensile strength of Ti46Al2.6C8Nb alloy increases from 330 MPa to 442 MPa and the strain increases from 2.9% to 5.3% with increasing test temperature from 750 °C to 950 °C. Solid solution strengthening by Nb, precipitation strengthening by Ti2AlC particles, increasing content of γ phase, and grain boundary strengthening are beneficial to improvement in mechanical properties of the studied alloys." @default.
- W2980567216 created "2019-10-25" @default.
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- W2980567216 date "2019-12-01" @default.
- W2980567216 modified "2023-09-25" @default.
- W2980567216 title "Effects of niobium on phase composition and improving mechanical properties in TiAl alloy reinforced by Ti2AlC" @default.
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- W2980567216 doi "https://doi.org/10.1016/j.intermet.2019.106630" @default.
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