CASTING HEAT RESISTANT NICKEL-BASED ALLOY Russian patent published in 2017 - IPC C22C19/05 

FIELD: metallurgy.

SUBSTANCE: invention relates to casting heat-resistant nickel-based alloys used for the manufacture of high-loaded parts of gas turbine engines and plants, namely, working and nozzle blades of gas turbines with a directional columnar and single crystal structure operating at the temperatures of 1000°C and higher. Casting heat-resistant nickel-based alloy contains, wt %: chromium 4.0-9.0; cobalt 9.0-14.0; tungsten 7.0-10.0; molybdenum 1.0-5.0; aluminium 4.0-6.0; tantalum 6.0-10.0; hafnium 0.1-1.0; carbon 0.002-0.1; yttrium 0.001-0.1; lanthanum 0.001-0.1; cerium 0.001-0.1; silicon 0.01-0.2; manganese 0.01-0.3; boron 0.005-0.03; scandium 0.0002-0.01; nickel - the rest.

EFFECT: specific gravity of the alloy decreases while maintaining a high level of heat resistance.

3 tbl, 1 ex