Pre-HIP heat treatment of superalloy castings
US4662951A · kind A · utility
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1References
2Claims
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Assignee
Inventors
Key dates
| Filing date | Dec 27, 1983 |
| Grant date | May 5, 1987 |
| Priority date | — |
| Expiry date | Dec 27, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.