M.sub.7 C.sub.3 Reinforced iron base superalloys
US4441939A · kind A · utility
4Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1981 |
| Grant date | Apr 10, 1984 |
| Priority date | — |
| Expiry date | Nov 6, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B29/52
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A carbide reinforced iron based superalloy material is described. The material consists of an austenitic matrix containing about 30 volume percent aligned M.sub.7 C.sub.3 phase fibers. Fiber alignment is produced by directional solidification. A nominal alloy composition (by weight) is 20% Cr, 10% Mn, 5% Al, 3.2% C. balance iron. The alloys are characterized by the absence of strategic elements, are east to process and have superior mechanical properties to the known prior art, low nickel, iron base superalloys.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.