MATERIAL BASED ON ALUMINUM INTERMETALLIC COMPOUNDS FOR ADDITIVE TECHNOLOGIES Russian patent published in 2024 - IPC C22C21/00 B33Y70/00 B33Y80/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to powder materials based on aluminum alloys used for manufacturing parts by additive technologies, including by selective laser fusion. Powdered aluminum alloy for producing heat-resistant articles by powder metallurgy and additive technologies contains the following, wt %: iron 2.0–5.0, chromium 2.5–5.5, niobium 0.01–1.5, titanium 0.1–0.5, hafnium and/or yttrium in total or separately 0.01–0.1, aluminum and unavoidable impurities, including silicon of not more than 0.1,—the rest. Alloy structure contains ternary (Al-Fe-Cr/Al-Fe-Ti) and four-component (Al-Fe-Cr-Nb/Al-Fe-Cr-Ti) intermetallic compounds in amount of 17 to 27 %. Powder from aluminum alloy is obtained by gas atomisation method using nitrogen or argon or a mixture of these gases with oxygen, wherein the powder contains oxygen in amount of 0.01–0.3 wt %. Article made from powder of aluminum alloy and manufactured by additive technologies has temporary resistance of not less than 140 MPa at temperature of 400 °C.

EFFECT: disclosed is a material based on aluminum intermetallic compounds for additive technologies.

4 cl, 6 dwg, 5 tbl, 4 ex