Pre-HIP heat treatment of superalloy castings

Details Pre-HIP heat treatment of superalloy castings Pre-HIP heat treatment of superalloy castings

1983-12-27

1987-05-05

Dean, R.

Metal treatment

Compositions

Heat treating

148 203, 148131, C22F 110

Patent

active

046629513

ABSTRACT:
Heat treatments are described which improve subsequent HIP treatment results of superalloy articles. The heat treatments substantially eliminate certain low melting phases which otherwise would cause problems relating to gas entrapment during a HIP process. The articles are heated to a temperature near but below the intended HIP temperature for a period of time sufficient to reduce the low melting phase.

REFERENCES:
patent: 3753790 (1973-08-01), Walker et al.

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