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- W4225146952 abstract "• La and co enhance glass-forming ability and thermal stability of Al-Cu-Y alloys. • Fundamental aspect of the crystallization behavior of amorphous ribbons is studied. • Achieved nanocrystalline-amorphous composites with superior mechanical properties. • Hardness reaches to 378.1 ± 15.3 HV in as spun condition. Al alloys with nominal composition of Al 86 Cu 6 Y 6 Co 2 , Al 86 Cu 6 Y 6 La 2 and Al 84 Cu 6 Co 2 Y 6 La 2 (at.%) were studied in as- spun and annealed states using differential scanning calorimetry (DSC), field emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD) and microhardness. The effect of La and Co atoms and annealing temperature on enhancement of glass forming ability, thermal stability and hardness of Al–Cu–Y based alloys were investigated. The results show the amorphous Al 84 Cu 6 Co 2 Y 6 La 2 alloy with higher RE (Y, La) contents and more elements is thermally stable up to 618±2 K while primary crystallization occurs. It also indicates the highest hardness of 378.1 ± 15.3 HV which enhances even more to 394.2 ± 16.8 HV after primary crystallization due to nano-sized α-Al crystals formation. The hardness of the alloy decreases to 340.3 ± 16.4 HV after the second crystallization reaction, possibly because of the presence of some weak intermetallic compound, growth of the α-Al and crystallization of the amorphous matrix." @default.
- W4225146952 created "2022-05-01" @default.
- W4225146952 creator A5044089791 @default.
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- W4225146952 date "2022-08-01" @default.
- W4225146952 modified "2023-09-27" @default.
- W4225146952 title "Nanostructure evolution, thermal stability and hardness of amorphous Al–Cu-Y (Co, La) (at.%) alloys" @default.
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- W4225146952 doi "https://doi.org/10.1016/j.jnoncrysol.2022.121663" @default.
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