US 12,123,076 B2
Low density nickel-based superalloy having high mechanical strength and environmental robustness at a high temperatures
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. 17/421,554
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/FR2020/050048
§ 371(c)(1), (2) Date Jul. 8, 2021,
PCT Pub. No. WO2020/148503, PCT Pub. Date Jul. 23, 2020.
Claims priority of application No. 1900389 (FR), filed on Jan. 16, 2019.
Prior Publication US 2022/0081739 A1, Mar. 17, 2022
Int. Cl. C22C 19/05 (2006.01); F01D 5/28 (2006.01)
CPC C22C 19/057 (2013.01) [F01D 5/28 (2013.01); F05D 2300/175 (2013.01); F05D 2300/607 (2013.01)] 14 Claims
 
1. A nickel-based superalloy comprising, in weight percent, 6 to 8% aluminum, 12 to 15% cobalt, 4 to 8% chromium, 0 to 0.2% hafnium, 0.5 to 4% molybdenum, 3.5 to 6% rhenium, 4.5 to 5.5% tantalum, 1.5 to 2.5% titanium, 0 to 2% 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 0.71:

OG Complex Work Unit Math