COMPOSITE CARBON-CONTAINING ALUMINUM POWDER MATERIAL FOR ADDITIVE TECHNOLOGIES Russian patent published in 2022 - IPC C22C49/06 C22C49/14 C22C101/10 C22C101/04 

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of metallurgy, in particular, to the composition of the initial powder materials for additive manufacturing processes, namely for the method for selective laser melting. Composite carbon-containing aluminum powder material for additive technologies includes an aluminum-containing matrix in the form of a powder with the following ratio of components in the matrix, wt.%: silicon 10.0-11.5, magnesium 0.30-0.45, aluminum - the rest, and a nano-sized additive in the form of a mixture of carbon fibers with a diameter of 20-50 nm and a length of 300-500 nm and a powder of spherical aluminum oxide with an average size particles 5-10 nm, with the following ratio of components, wt.%: carbon fibers 0.5-1.0, spherical alumina 0.5-1.0, aluminum-containing matrix - the rest, while the median particle size of the composite material powder is 30-40 microns.

EFFECT: increase in fluidity and increase in bulk density of a composite aluminum material to provide increased microhardness of objects obtained by selective laser melting.

1 cl, 5 ex, 1 tbl, 2 dwg