ALUMINUM-BASED NANOSTRUCTURED COMPOSITE MATERIAL Russian patent published in 2022 - IPC C22C1/04 C22C21/06 B82B1/00 

FIELD: powder metallurgy.

SUBSTANCE: invention relates to high-strength aluminum-based composite materials used in various technical fields, mainly as structural materials in aerospace and transport industry. Nanostructured composite material is obtained by mechanical activation in a planetary ball mill of an initial charge consisting of an AMg2 alloy and graphite. Powder graphite in amount of 1 wt. % is used as reinforcing additive, which is subjected to mechanical splitting to form nanocrystalline particles with size of not more than 5 nm. Grains of composite material have size of not more than 62 nm, and grinding of initial mixture is carried out for 50 minutes at carrier rotation frequency n_v=815 min⁻¹ with formation of nanostructured composite granules with size of 3–5 mm.

EFFECT: higher microhardness of granules, reduced prime cost of composite material and increased efficiency of mechanical synthesis process.

1 cl, 10 dwg