Superalloy compositions with a nickel base
AssigneesSociete Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A.", Association pour la Recherche et le Developpement des Methodes et Processus Industriels A.R.M.I.N.E.S., Tecphy, Office National d'Etudes et de Recherches Aerospatiales (O.N.E.R.A.)
InventorsChristian A. B. Ducrocq, Didier P. A. Lestrat, Bernard Paintendre, James H. Davidson, Michel Marty, Andre Walder
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Abstract
Superalloy with a nickel base matrix having good mechanical properties when ot in respect of tensile strength, creep resistance, low cycle fatigue and resistance to crack-propagation of which the composition in percentages by weight is as follows: Cr 11 to 13; Co 8 to 17; Mo 6 to 8; Nb less than or equal to 1.5; Ti 4 to 5; Al 4 to 5; Hf less than or equal to 1; C, B, Zr each less than or equal to 500 ppm; Ni remainder to 100. The alloy can be manufactured advantageously by powder metallurgy techniques and used in the manufacture of turbo machine disks.
Claims2
A superalloy having a nickel base matrix and having good tensile strength, creep resistance, low cycle fatigue and resistance to crack-propagation when heated, which consists essentially of in weight percent:
- Cr, 11.9;
- Co, 15.8;
- Mo, 6;
- Nb, 1.4;
- Ti, 4;
- Al, 4.3;
- Hf, 0.32;
- C, 150 ppm;
- B, 150 ppm;
- Zr, 500 ppm;
- with the remainder of Ni to 100.
A superalloy having a nickel base matrix and having good tensile strength, creep resistance, low cycle fatigue and resistance to crack-propagation when heated, which consists essentially of in weight percent:
- Cr, 12;
- Co, 15.7;
- Mo, 6.8;
- Nb, 0;
- Ti, 4.35;
- Al, 4.35;
- Hf, 0.48;
- C, 150 ppm;
- B, 150 ppm;
- Zr, 300 ppm;
- and the remainder of Ni to 100.
Dependencies are inferred from the claim text.