Process for producing a single-crystal component made of a nickel-based superalloy
US8435362B2 · kind B2 · utility
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Key dates
| Filing date | Jun 28, 2011 |
| Grant date | May 7, 2013 |
| Priority date | — |
| Expiry date | Aug 2, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C1/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In a process for producing a large single-crystal component or directionally solidified component made of a nickel-based superalloy, the component is first cast into shape in a known manner to form a microstructure comprising dendrites, and then solution annealing for homogenizing the cast microstructure of the component and two-stage precipitation heat treatment are carried out. In order to avoid chemical inhomogeneities and internal stresses caused thereby, a HIP process with a pressure of higher than 160 MPa is carried out following the solution annealing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.