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Al 65 Cu 23 Fe 12 quasicrystalline (QC) powder was used as a filling material for aluminium matrix composites. Quasicrystalline phase was prepared by mechanical alloying of elemental powders and subsequent annealing. To produce the composites, QC was milled together with pure aluminium in the ratios of Al -20 mass. % QC and Al -10 mass. % QC for various milling times. It was shown that the QC phase in these composites remains untransformed up to the temperatures of 350 -400 0 C. Heating up to higher temperatures initiates the reaction between QC and Al yielding ternary crystalline Al 7 Cu 2 Fe phase; an increase in the milling time raises the reaction rate.

The Ni-Al phases were synthesized in the composition range 40-85 at. % Ni by mechanical alloying (MA) of elemental component mixtures. MA of Ni-Al powders produces the B2 phase in the range 40 -61 at. % Ni and a solid solution Ni(Al) -in the range 65-85 at. % Ni. Milling of Ni 62.5 Al 37.5 composition results in formation of the B2 and Ni(Al) phases mixture. Formation of a supersaturated solid solution for 65-75 at. % Ni were accompanied by appearance of B2 phase at the intermediate MA stage. Ball milling of Ni and Al powder mixtures of the compositions corresponded to intermetallics NiAl and Ni 3 Al, with a 5 at. % addition of X=Ti, Mo or Nb, where the third element was substituted for Ni (Ni 45 Al 50 X 5 and Ni 70 Al 25 X 5 ), Al (Ni 50 Al 45 X 5 and Ni 75 Al 20 X 5 ) or both (Ni 47.5 Al 47.5 X 5 and Ni 71.25 Al 23.75 X 5 ) was performed. The regularities of influence of the third components on the final structure of the as-milled and annealed alloys were observed. The preferred sublattices for X additions in B2 and L1 2 intermetallic phases were determined.

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