Method for making a hydrogen embrittlement resistant .gamma.' strengthened nickel base superalloy material
US5976280A · kind A · utility
1Cited by
9References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1996 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Dec 4, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S60/909
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A nickel base superalloy, having either columnar or equiaxed grain structure, which has significantly improved resistance to hydrogen embrittlement, and to fatigue in air. The material is processed so as to be essentially free of script type carbides, .gamma./.gamma.' eutectic islands and porosity. The processing includes heat treating above the .gamma.' solvus temperature to solution the script type carbides and eutectic islands, followed by HIP to eliminate the porosity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.