Tantalum modified gamma prime-alpha eutectic alloy
US4288259A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1978 |
| Grant date | Sep 8, 1981 |
| Priority date | — |
| Expiry date | Dec 4, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B21/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This disclosure relates to directionally solidified articles produced from a eutectic alloy in the nickel-aluminum-molybdenum system with tantalum added. The articles have a microstructure consisting of a ductile matrix phase of gamma prime containing a fibrous reinforcing second phase of alpha Mo. The nominal composition of the base alloy is 6.9 weight percent aluminum, 15.2 weight percent tantalum, 18.5 weight percent molybdenum, balance nickel. The directionally solidified alloy articles of the invention are characterized by exceptional mechanical properties combined with good oxidation resistance and reasonable sulfidation resistance at elevated temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.