NICKEL-BASED CASTING HEAT RESISTANT ALLOY Russian patent published in 1997 - IPC

FIELD: nonferrous metallurgy. SUBSTANCE: invention relates to nickel-based alloys used for welding deposition onto parts operating under conditions of high- temperature fretting corrosion, for instance, onto contact surfaces of working and nozzle blades of gas-turbine engines. Alloy of invention is composed of (in wt %): carbon, 0.12-0.18; chromium, 4.3- 5.6; aluminium, 5.6-6.3; cobalt, 8.0-10.0; niobium, 3.5-4.3; tungsten, 7.7-9.5; molybdenum, 4.0-5.0; tantalum, 3.5-4.5; rhenium, 3.5-4.5; iron, 0.1-1.0; boron, 0.01-0.02; cerium, 0.005-0.025; yttrium, 0.001-0.005; lanthanum, 0.001-0.005; nickel, the balance. EFFECT: increased initial hardness of alloy under high-temperature condition. 1 tbl