Fabricable, high strength, oxidation resistant Ni—Cr—Co—Mo—Al alloys
US10577680B2 · kind B2 · utility
4Cited by
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25Claims
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Key dates
| Filing date | Jun 27, 2019 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Jun 27, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C19/056
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Ni—Cr—Co—Mo—Al based alloys are disclosed which contain 15 to 20 wt. % chromium, 9.5 to 20 wt. % cobalt, 7.25 to 10 wt. % molybdenum, 2.72 to 3.89 wt. % aluminum, certain minor elemental additions, along with typical impurities, a tolerance for up to 10.5 wt. % iron, and a balance of nickel. These alloys are readily fabricable, have high creep strength, good thermal stability, and excellent oxidation resistance up to as high as 2100° F. (1149° C.). This combination of properties is useful for a variety of gas turbine engine components, including, for example, combustors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.