COMPOSITE MATERIAL BASED ON ALUMINIUM OR ALUMINIUM ALLOY AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2021 - IPC C22C49/06 C22C49/14 C22C101/04 C22C1/10 

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of metallurgy, namely, to production of a cast composite material based on aluminium or aluminium alloy reinforced with discrete Al₂O ₃ fibres of a nanoscale diameter, and can be used as a construction material in various fields of technology. The cast composite material comprises a matrix of aluminium or aluminium alloy and a reinforcer made in the form of a conglomerate of discrete aluminium oxide fibres with a diameter of 10 to 20 nm and transport copper powders with a size of 10 to 20 mcm, wherein the total content of aluminium oxide and copper is 1% wt. The method for producing a cast composite material includes mixing discrete aluminium oxide fibres with a diameter of 10 to 20 nm and copper powders with a size of 10 to 20 mcm for 30 to 40 minutesthe introducing the resulting conglomerates into the melt of aluminium or aluminium alloy at a temperature of 750 to 800°C, mixing at a rate of 600 rpm with sustaining for 10 to 15 min for the development of processes of distribution of the discrete fibres throughout the volume of the melt, followed by mixing with controlled lowering of the temperature to 740 to 750°C and casting into moulds.

EFFECT: invention is aimed at increasing the hardness and microhardness of a composite material based on aluminium or an aluminium alloy while maintaining the density thereof.

2 cl, 2 dwg, 2 tbl