Turbine component made from superalloy comprising rhenium and associated manufacturing process
AssigneeSafran
InventorsAmar SABOUNDJI, Virginie JAQUET
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Abstract
A turbine component includes a substrate made from monocrystalline nickel-based superalloy including rhenium, which has a γ-γ′ Ni phase, and an average weight faction of chromium of less than 0.08, a sublayer made from nickel-based metal superalloy covering the substrate, in which the sublayer made from metal superalloy includes at least aluminium, nickel, chromium, silicon, hafnium and has, predominantly by volume, a γ′-Ni 3 Al phase.
Claims15
A turbine component comprising:
- a substrate of single-crystal nickel-based superalloy, comprising rhenium, having a γ-γ′ Ni phase, and an average chromium mass fraction of less than 0.08;
- and
- a nickel-based metal superalloy sublayer covering the substrate,
- wherein:
- the metal superalloy sublayer comprises at least aluminum, nickel, chromium, silicon, hafnium and has a γ′-Ni3Al phase predominantly by volume.
A process for manufacturing a turbine component comprising a step of vacuum deposition of a sublayer of a nickel-based superalloy having, predominantly in volume, a γ′-Ni3Al phase, as well as optionally a γ-Ni phase, on a substrate of nickel-based superalloy comprising rhenium and having a γ-γ′ Ni phase.
Dependencies are inferred from the claim text.