CORROSION-RESISTANT SCANDIUM ALLOY Russian patent published in 2023 - IPC C22C19/05 

FIELD: metallurgy.

SUBSTANCE: nickel-based alloys intended for use in the nuclear industry at temperatures of 700, 750°C. Corrosion-resistant alloy contains, wt.%: carbon ≤0.006, silicon ≤0.1, manganese ≤1.0, chromium 22.8-24.0, iron ≤0.75, molybdenum 12.0-14.0, niobium 0.01-0.03, titanium 0.01-0.06, aluminum 0.1-0.2, magnesium 0.005-0.01, phosphorus ≤0.015, sulfur ≤0.012, scandium 0.05-0.15, nickel and inevitable impurities - the rest. Ratio of molybdenum content to scandium content 93≤([Mo])/([Sc])≤240, and the ratio of scandium content to carbon content ([Sc])/([C])≥ 12.

EFFECT: corrosion-resistant alloy is characterized by a high level of plastic properties when operating at temperatures of 700 and 750°C.

1 cl, 3 tbl, 3 ex