Blade and method for producing the blade
US6521059B1 · kind B1 · utility
7Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1998 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Dec 17, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/133
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In a blade possessing a blade body and a blade foot consisting of an alloy based on a doped gamma-titanium aluminide, at least part of the surface layer of the blade has a finely-grained structure, and the core has a coarsely-grained structure. The ductility of the finely-grained surface layer is higher than that of the coarsely-grained core. In a method for producing the blade, the surface is deformed after casting and hot-isostatic pressing of the blade. The deformed surface layer undergoes recrystallization annealing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.