US 12,312,658 B2
Nickel-based superalloy having high mechanical strength at a high temperature
Jérémy Rame, Moissy-Cramayel (FR); Edern Menou, Moissy-Cramayel (FR); Clara Desgranges, Moissy-Cramayel (FR); and Franck Tancret, Nantes (FR)
Assigned to SAFRAN, Paris (FR); UNIVERSITE DE NANTES, Nantes (FR); and CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR)
Appl. No. 17/422,044
Filed by SAFRAN, Paris (FR); UNIVERSITE DE NANTES, Nantes (FR); and CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR)
PCT Filed Jan. 14, 2020, PCT No. PCT/FR2020/050049
§ 371(c)(1), (2) Date Jul. 9, 2021,
PCT Pub. No. WO2020/148504, PCT Pub. Date Jul. 23, 2020.
Claims priority of application No. 1900390 (FR), filed on Jan. 16, 2019.
Prior Publication US 2022/0098705 A1, Mar. 31, 2022
Int. Cl. C22C 19/05 (2006.01); C23C 28/00 (2006.01); F01D 5/28 (2006.01)
CPC C22C 19/057 (2013.01) [C23C 28/321 (2013.01); C23C 28/3455 (2013.01); F01D 5/288 (2013.01); C22C 2204/00 (2013.01); F05B 2280/10741 (2013.01)] 16 Claims
 
1. A nickel-based superalloy consisting of, in weight percent, 4 to 6% aluminum, 5 to 8% cobalt, 6 to 9% chromium, 0.1 to 0.9% hafnium, 2.5 to 4% molybdenum, 5 to 7% rhenium, 5 to 7% tantalum, 2 to 5% tungsten, 0 to 0.1% silicon, the balance consisting of nickel and unavoidable impurities, wherein a ratio NFP defined by equation (1) is greater than or equal to 0.74:

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