HIGH-TEMPERATURE HAFNIUM-CONTAINING ALLOY BASED ON TITANIUM Russian patent published in 2018 - IPC C22C14/00 C22C30/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of metallurgy of titanium alloys and can be used for the parts and assemblies of rocket and aircraft engines operating under high loads at temperatures up to 1,000 °C, in particular for high-temperature products of gas turbine engines (GTE). High-temperature hafnium-based alloy based on titanium contains, wt%: tantalum 16–25, hafnium 7–15, chromium 3–6.5, zirconium 0.01–0.05, carbon 0.01–0.05, oxygen 0.03–0.01, nitrogen 0.008–0.02, hydrogen ≤ 0.005, titanium – the rest. Alloy is obtained by the method of electron beam melting.

EFFECT: alloy has a high value of tensile strength σ_h up to 1,200 MPa at temperatures up to 1,000 °C, it ensures the reliability of the titanium products.

1 cl, 1 tbl