Heat treatment and repair of cobalt base superalloy articles

Details Heat treatment and repair of cobalt base superalloy articles Heat treatment and repair of cobalt base superalloy articles

1994-07-26

1996-08-27

Simmons, David A.

Metal treatment

Process of modifying or maintaining internal physical...

Surface melting

228119, 22826230, 22826231, B23K 3100

Patent

active

055497675

ABSTRACT:
An improved method is described for repairing Co-base superalloy gas turbine engine components by applying a mixture of base alloy powder and base alloy powder with a melting point depressant to the surface of the component and heating at 2250.degree.-2300.degree. F. to diffuse the melting point depressant isothermally into the base alloy. A protective coating is then applied, during which a heating cycle which ages the base material is used. The resultant component has high temperature creep properties which are significantly better than achieved using the prior art process. The same temperature cycle is also useful in the initial heat treatment of Co-base superalloys, and can also be used for rejuvenation of components which have experienced extensive exposure to engine operating conditions.

REFERENCES:
patent: 3667939 (1972-06-01), Hecht et al.
patent: 3802934 (1974-04-01), Augustine et al.
patent: 4003765 (1977-01-01), Davidson
patent: 4116724 (1978-09-01), Hirschfeld
patent: 4285459 (1981-08-01), Baladjanian et al.
patent: 4381944 (1983-05-01), Smith et al.
patent: 4437913 (1984-03-01), Fukui et al.
patent: 4726101 (1988-02-01), Draghi et al.
patent: 4789412 (1988-12-01), Nakamura et al.
patent: 4830934 (1989-05-01), Ferrigno et al.
patent: 4938805 (1990-07-01), Haydon et al.
patent: 5086968 (1992-02-01), Fawley et al.
patent: 5156321 (1992-10-01), Liburdi et al.

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