Ni-based superalloy, and turbine rotor and stator blades for gas turbine using the same
US9574451B2 · kind B2 · utility
0Cited by
9References
13Claims
0Family size
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Key dates
| Filing date | Apr 15, 2015 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Apr 15, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/175
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An object of the present invention is to provide a Ni-based superalloy, especially for a conventional casting, having a good balance among high temperature strength, corrosion resistance and oxidation resistance, as compared to a conventional material. The Ni-based superalloy comprises Cr, Co, Al, Ti, Ta, W, Mo, Nb, C, B, and inevitable impurities, the balance being Ni, the Ni-based superalloy having a superalloy composition comprising, by mass, 13.1 to 16.0% Cr, 11.1 to 20.0% Co, 2.30 to 3.30% Al, 4.55 to 6.00% Ti, 2.50 to 3.50% Ta, 4.00 to 5.50% W, 0.10 to 1.20% Mo, 0.10 to 0.90% Nb, 0.05 to 0.20% C, and 0.005 to 0.02% B.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.