NICKEL-BASE HEAT-RESISTANT ALLOY AND ARTICLE MADE OF THEREOF Russian patent published in 2003 - IPC

FIELD: metallurgy. SUBSTANCE: invention proposes heat-resistant casting alloy and article made of thereof containing the following components, wt. -%: carbon, 0.005-0.07; chrome, 12.5-14.5; cobalt, 8.0-10.0; tungsten, 3.5-5.5; molybdenum, 0.8-2.2; titanium, 3.4-4.3; aluminum, 3.5-4.8; tantalum, 0.5-2.5; rhenium, 0.8-2.0; boron, 0.001-0.02; yttrium, 0.005-0.05; nickel, the balance. Invention provides the development of nickel-base heat- resistant alloy with high resistance to hot corrosion, technological effectiveness in monocrystalline casting in combination with high level of heat-resistance. Invention can be used for making high-temperature units, mainly turbine vanes with monocrystalline structure in gas-turbine engines and devices by method of directed crystallization. EFFECT: valuable properties of alloy and article. 3 cl, 2 tbl, 1 ex