Component possessing high resistance to corrosion and oxidation, composed of a dispersion-hardened superalloy, and process for its manufacture
US4531981A · kind A · utility
10Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 1, 1984 |
| Grant date | Jul 30, 1985 |
| Priority date | — |
| Expiry date | Feb 1, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S148/902
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A component possessing high resistance to corrosion and oxidation, composed of a dispersion-hardened superalloy having a high creep strength, comprises a coarse-grained core (1) which has high strength at high temperatures, and a fine-grained skin zone (2) which forms a case. The component is manufactured with the aid of a heat-treatment, or thermomechanical treatment, in a manner such that, starting from a fine-grained initial condition, the skin zone (2) is restrained from participating in the recrystallization which leads to the formation of coarse grains in the core (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.