Process for increasing the lifetime of a refractory material pie

Details Process for increasing the lifetime of a refractory material pie Process for increasing the lifetime of a refractory material pie

1981-02-19

1983-09-27

Dean, R.

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

148404, C21D 900, C22F 110

Patent

active

044067160

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.

REFERENCES:
patent: 3871835 (1975-03-01), Bibring et al.
patent: 3985582 (1976-10-01), Bibring et al.

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