Method for preventing recrystallization after cold working a superalloy article
US5598968A · kind A · utility
21Cited by
18References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1995 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | Nov 21, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49321
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process is provided for manufacturing and repairing components, and particularly superalloy components such as gas turbine engine components. The invention entails forming precipitates in a surface of the article that has been cold worked as a result of surface machining, cleaning, handling, etc. The precipitates serve to prevent recrystallization and formation of a secondary reaction zone in the cold worked surface of the superalloy when subsequently exposed to temperatures approaching the solution temperature of the superalloy, such that the microstructure and mechanical properties of the superalloy article are preserved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.