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- W2967625662 abstract "At high temperatures, the weakened strength and decreased ductility of Al alloys limit their industrial applications. (TiB2–TiC)/Al–Cu–Mg–Si composites were synthesized by adding in situ dual-phased and bimodal-sized (TiB2–TiC)/Al master alloys to molten Al–Cu–Mg–Si alloys. The addition of minor amounts of TiB2 and TiC particles (0.05 and 0.1 wt%, respectively) effectively refined the α-Al grains and θ′ and Q′ precipitates and increased the elevated-temperature strength and uniform elongation of the Al–Cu–Mg–Si alloys. The 0.1 wt% (TiB2–TiC)/Al–Cu–Mg–Si composite showed the best yield strength (279 MPa), ultimate tensile strength (366 MPa), and uniform elongation (10.6%) at 493 K, with enhancements of 9.4%, 15.1%, and 24.7% compared to the Al–Cu–Mg–Si matrix alloy (255 MPa, 318 MPa, and 8.5%). The simultaneous increases in the elevated temperature strength and ductility of the composites were attributed to the strengthening effects of the bimodal-sized TiB2 and TiC particles, θ′ and Q′ precipitation strengthening, and the refined partial recrystallization microstructure." @default.
- W2967625662 created "2019-08-22" @default.
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- W2967625662 date "2019-09-01" @default.
- W2967625662 modified "2023-10-17" @default.
- W2967625662 title "A new approach for improving the elevated-temperature strength and ductility of Al–Cu–Mg–Si alloys with minor amounts of dual-phased submicron/nanosized TiB2–TiC particles" @default.
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- W2967625662 doi "https://doi.org/10.1016/j.msea.2019.138266" @default.
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