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US 4,579,602 AGranted
Forging process for superalloys
AssigneeUnited Technologies Corporation
InventorsDaniel F. Paulonis, David R. Malley, Edgar E. Brown
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Abstract
Forging processes are described for cast superalloys. The forgeability of superalloy materials is improved by the development of overaged microstructure. The total forging process is usually performed in a series of steps with intervening heat treatments to reform the overaged microstructure.
Claims6
A method of forging fine grained cast superalloy materials including the steps of
- a. overaging the material to produce a coarse gamma prime distribution;
- b. isothermally forging the overaged material.
A method of forging fine grained cast superalloy materials including the steps of
- a. overaging the material to produce a coarse gamma prime distribution;
- b. isothermally forging the overaged material without causing significant cracking;
- c. recrystallizing the material;
- d. overaging the material;
- e. isothermally forging the material.
2 more elements
Dependencies are inferred from the claim text.