ALLOY BASED ON INTERMETALLIC COMPOUND NiAl, METHOD OF ITS PRODUCTION AND METHOD OF MAKING ARTICLES FROM IT Russian patent published in 2024 - IPC C22C19/05 C22C1/02 C22F1/10 

FIELD: metallurgy.

SUBSTANCE: cast structural alloy based on intermetallic compound Ni₃Al contains, wt.%: Al 8.0–9.0, Cr 4.5–5.5, W 1.8–2.5, Mo 4.5–5.5, Ti 0.6–1.2, C 0.12–0.16, Co 3.5–4.5, Zr 0.05–0.50, Fe 0.03–2.0, Ca 0.001–0.01, at least one element from a group comprising La, Ce and Nd 0.0015–0.0150, Ni and unavoidable impurities—the rest. Alloy has the following phase composition, wt.%: γ'—phase 83.5–89.0, γ—phase 10–15, carbide phase 1.0–1.5. Also disclosed is a method of producing an alloy and a method of making an article from said alloy.

EFFECT: improved characteristics of short-term strength, plasticity in the temperature range of 20–1,000 °C, heat resistance in the temperature range of 200–1,100 °C, yield of suitable alloy based on intermetallic compound Ni₃Al with polycrystalline (equiaxial) structure containing iron and cobalt, as well as reduction of labor intensity of its production.

4 cl, 4 tbl, 3 ex