HIGH ENTROPY HEAT-RESISTANT ALLOY (EMBODIMENTS) Russian patent published in 2023 - IPC C22C30/00 

FIELD: alloy metallurgy.

SUBSTANCE: invention is related to high-entropy heat-resistant alloys operating under conditions of short-term exposure to high temperatures of 1200°C and which can be used for the manufacture of elements and structural parts of aircraft and rocket engines. The alloy contains components in the following ratio, at.%: aluminium 18.0, molybdenum 7.5, niobium 16.0, tantalum 7.77, titanium 15.3, zirconium 15.4, vanadium 15.0, silicon 5, 0, a rare earth metal selected from the group including lanthanum, cerium, yttrium and neodymium, or a mixture of rare earth metals selected from the group including lanthanum, cerium, yttrium and neodymium, 0.03, while in the case of a mixture, the content of each of the rare earth metals is more than 0.001.

EFFECT: alloy has a reduced density and increased strength characteristics at temperatures up to 1200°C.

2 cl, 1 tbl