Process for increasing the lifetime of a refractory material piece made of metallic carbide parallel fibers embedded into a metallic matrix
US4406716A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 1981 |
| Grant date | Sep 27, 1983 |
| Priority date | — |
| Expiry date | Feb 19, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B29/52
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to a process for increasing the lifetime of a refrary composite material piece comprising a metallic matrix and a reinforcing phase consisting of aligned monocrystalline fibers made of a metallic carbide, when the piece has suffered a plastic deformation in the direction of said fibers. The invention consists in restoring the initial qualities of the piece by subjecting it to a high temperature, inferior to the melting point of the material, more precisely at the temperature at which the piece resumes its initial length after being cooled at ambient temperature. The invention is particularly applicable to pieces forming turbine blades for aircrafts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.