The paper examines the phase transformations of composite powders based on Al63Cu25Fe12 that contain alloying elements (Ti, Cr, Si in the ratio AlCuFe : TiCrSi = 75 : 25). The powders are produced by mechanochemical synthesis and subsequent thermal treatment. Amorphous and crystalline powder mixtures form during synthesis; their annealing results in multiphase structures consisting of α, β1, and β2 phases. High-temperature x-ray diffraction has revealed an α-phase between 700 and 900°C. The new α-phase should be regarded as a 1/1 approximant of the nonequilibrium quasicrystalline phase. The maximum content of the approximant phase (68 wt.%) is observed after five-hour synthesis and subsequent annealing (T = 700°C, τ = 2 h) of pressed powders, microhardness of the particles reaching 8900 MPa.
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A. L. Borisova, Yu. S. Borisov, L. I. Adeeva, et al., “Effect of mechanochemical synthesis parameters on the phase composition and properties of AlCuFe alloy powders that contain a quasicrystalline phase for thermal spraying,” Avtomat. Svarka, No. 9, 19–27 (2008).
Yu. S. Borisov, A. L. Borisova, M. V. Karpets, et al., “Study of phase transformations in multicomponent alloy powders based on AlCuFe with quasicrystalline structure,” Sovrem. Élektrometall., No. 4, 47–53 (2006).
Y. S. Touloukian, R. K. Kirby, R. E. Taylor, and T. Y. R. Lee, Thermal Expansion, Non-metallic Solids, Thermophysical Properties of Matter, IFI/Plenum, New York (1977), Vol. 13, p. 584.
P. Barua, B. Murty, and V. Srinivas, “Mechanical alloying of Al–Cu–Fe elemental powders,” Mater. Sci. Eng., No. 304–306, 863–866 (2001).
A. I. Salimon, A. M. Korshunsky, E. V. Shelehov, et al., “Crystallochemical aspects of solid state reactions in mechanically alloyed Al–Cu–Fe quasicrystalline powders,” Acta. Mater. Inc., 49, 1821–1833 (2001).
O. M. Barabash, Yu. V. Milman, D. V. Miracle, et al., “Formation of periodic microstructures involving the L12 phase in eutectic Al–Ti–Cr alloys,” Intermetallics, 11, 953–962 (2003).
W. J. Kim, P. C. Gibbons, K. F. Kelton, and W. B. Yelon, “Structural refinement of 1/1 approximants to quasicrystals: Bergman-type W(TiZrNi) and Mackay-type M(TiZrFe),” Phys. Rev., B58, No. 5, 2578–2585 (1998).
J. L. Libbert, K. F. Kelton, A. I. Goldman, and W. B. Yelon, “Structural determination of a 1/1 rational approximant to the icosahedral phase in Ti–Cr–Si alloys,” Phys. Rev., B49, No. 17, 11675–11680 (1994).
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Translated from Poroshkovaya Metallurgiya, Vol. 48, No. 9–10 (469), pp. 31–40, 2009.
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Borisova, A.L., Adeeva, L.I., Tunik, A.Y. et al. Study of Al–Cu–Fe–Ti–Cr–Si powders for thermal spraying produced by mechanochemical synthesis and subsequent annealing. Powder Metall Met Ceram 48, 514–521 (2009). https://doi.org/10.1007/s11106-010-9161-4
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DOI: https://doi.org/10.1007/s11106-010-9161-4