Pre-hip heat treatment of superalloy castings

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

B - Operations, Transporting

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F

75/165

B22F 3/12 (2006.01) C21D 8/00 (2006.01) C22F 1/10 (2006.01)

Patent

CA 1243508

-12- Pre-Hip Heat Treatment of Superalloy Castings Abstract Heat treatments are described which improve subsequent HIP treatment results of superalloy articles. The heat treatments substantially eliminate certain low melting phases which other- wise would cause problems relating to gas entrap- ment 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.

468428

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