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- W1997481010 abstract "Multiphase Al65Cu20Ti15 intermetallic alloy matrix composite, dispersed with 10 wt.% of TiO2 nanoparticles, has been processed by mechanical alloying, followed by spark plasma sintering under pressure in the temperature range of 623–873 K. Differential scanning calorimetry and X-ray diffraction suggest that equilibrium crystalline phases evolve from the amorphous or intermediate crystalline phases. Transmission electron microscopy shows that the composite sintered at 873 K has partially amorphous microstructure, with dispersion of equilibrium, crystalline, intermetallic precipitates of Al5CuTi2, Al3Ti, and Al2Cu of 25–50 nm size, besides the TiO2. The composite sintered at 873 K exhibits little porosity, hardness of 5.6 GPa, indentation fracture toughness in the range of 3.1–4.2 MPa√m, and compressive strength of 1.1 GPa. Indentation crack deflection by TiO2 particle aggregates causes increase in fracture resistance with crack length, and suggests R-curve type behaviour. The study provides guidelines for processing high strength amorphous–nanocrystalline intermetallic composites based on the Al–Cu–Ti ternary system." @default.
- W1997481010 created "2016-06-24" @default.
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- W1997481010 date "2007-12-01" @default.
- W1997481010 modified "2023-10-01" @default.
- W1997481010 title "Microstructure and mechanical properties of mechanically alloyed and spark plasma sintered amorphous–nanocrystalline Al65Cu20Ti15 intermetallic matrix composite reinforced with TiO2 nanoparticles" @default.
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- W1997481010 doi "https://doi.org/10.1016/j.intermet.2007.06.012" @default.
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