Regeneration of nickel-based superalloy parts damaged by creep

Details Regeneration of nickel-based superalloy parts damaged by creep Regeneration of nickel-based superalloy parts damaged by creep

1986-11-17

1988-06-28

Rutledge, L. Dewayne

Metal treatment

Compositions

Heat treating

148 115N, 148162, C22F 110

Patent

active

047536861

ABSTRACT:
Method for the regeneration of machine parts of a nickel-based alloy, such as turbo-machine blades having reached the end of their useful operational life as a consequence of damage by creep in particular, consisting in holding the part for at least 1 hour at a temperature sufficient to redissolve a volumetric fraction of at least 50% of the .gamma.' phase, then controlling its precipitation by controlling the rate of cooling so as to regenerate its microstructural morphology.

REFERENCES:
patent: 3310440 (1967-03-01), Piearcey
patent: 3957542 (1976-05-01), Cina et al.
patent: 4161412 (1979-07-01), Henry
patent: 4392894 (1983-07-01), Pearson et al.

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