SUPERALLIAGE BASED ON NICKEL, MONOCRYSTALLINE AUBE AND TURBOMACHINE

摘要

The invention relates to a nickel-based superalloy comprising, in mass percentages, 4.0 to 5.5% of rhenium, 1.0 to 3.0 of ruthenium, 2.0 to 14.0% of cobalt, 0, 3 to 1.0% molybdenum, 3.0 to 5.0% chromium, 2.5 to 4.0% tungsten, 4.5 to 6.5% aluminum, 0.50 to 1.50 % titanium, 8.0 to 9.0% tantalum, 0.15 to 0.30% hafnium, 0.05 to 0.15% silicon, the balance being nickel and unavoidable impurities. The invention also relates to a monocrystalline blade (20A, 20B) comprising such an alloy and a turbomachine (10) comprising such a blade (20A, 20B).