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US 4,900,511 AGranted
Nickel-based monocrystalline superalloy, in particular for the blades of a turbomachine
AssigneeOffice National d'Etudes et de Recherche Aerospatiales
InventorsTasadduq Khan, Pierre Caron, Jean-Louis Raffestin
Life of this patent
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Abstract
A low density superalloy having good resistance to oxidation has the following composition by weight: Co: 5.0 to 6.0% W: 4.8 to 5.2% Cr: 7.8 to 8.3% Al: 5.8 to 6.1% Ta: 3.3 to 3.7% Mo: 2.1 to 2.4% Ti: 1.8 to 2.2% B: .ltoreq.10 ppm Zr: .ltoreq.50 ppm Ni: balance to 100%.
Claims2
A nickel-based superalloy intended in particular for monocrystalline solidification of turbomachine parts, said superalloy consisting essentially of:
- Co:
- 5.0 to 6.0% by weight
- W:
- 4.8 to 5.2%
- Cr:
- 7.8 to 8.3%
- Al:
- 5.8 to 6.1%
- Ta:
- 3.3 to 3.7%
- Mo:
- 2.1 to 2.4%
- Ti:
- 1.8 to 2.2%
- B:
- .ltoreq.10 ppm
- Zr:
- .ltoreq.50 ppm
- Ni:
- balance to 100%.
17 more elements
Dependencies are inferred from the claim text.