CONTENT OF HEAT-RESISTANT NICKEL ALLOY FOR SINGLE-CRYSTAL CASTING (VERSIONS) Russian patent published in 2009 - IPC C22C19/05 

FIELD: metallurgy.

SUBSTANCE: invention concerns metallurgy. Particularly it concerns foundry heat-resistant nickel alloys, provided for manufacturing of single-crystal operating and nozzle blades of gas turbine engine, long time operating at temperatures, exceeding 1000°C. According to the first version alloy has following content, wt %: chrome -0.5-4.0, aluminium - 4.0-7.0, tungsten - 12.0-16.0, tantalum - 3.0-12.0, rhenium ≤3.0, cobalt - 4.0-9.0, yttrium - 0.003-0.1, lanthanum - 0.001-0.1, cerium - 0.003-0.1, nickel - the rest. Alloys are described by high level of heat resistance at keeping its processing characteristics, such as casting properties and processing plasticity. According to the second version alloy has following content, wt %: chrome - 0.5-4.0, aluminium -4.0-7.0, titanium - ≤2.0, molybdenum ≤4.0, tungsten - 12.0-16.0, tantalum - 3.0-12.0, rhenium ≤3.0, cobalt - 4.0-9.0, niobium ≤2.0, yttrium - 0.003-0.1, lanthanum - 0.001-0.1, cerium - 0.003-0.1, carbon - ≤0.1, nickel - the rest.

EFFECT: increasing of alloy corrosion resistance.

2 cl, 1 dwg, 2 tbl, 1 ex