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 of alloys. Particularly it concerns production of alloys on the basis of nickel, used for details with single-crystal structure, for instance, turbine blades, operating at high temperatures. Alloy according to the first version contains, wt %: chrome - 0.5-4.0, aluminium - 4.0-7.0, tungsten - 12.0-16.0, tantalum - 3.0-12.0, cobalt - 4.0-9.0, yttrium - 0.003-0.1, lanthanum - 0.001-0.1, cerium - 0.003-0.1, nickel - the rest and is described by high heat resistance. For increasing of heat resistance, improvement of casting characteristics, process plasticity and increasing of corrosion resistance of alloy by the second version contains, 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, 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 heat resistance, improvement of casting characteristics, process plasticity and increasing of corrosion resistance of alloy.

2 cl, 1 dwg, 2 tbl, 2 ex