Nb-base composites
US5833773A · kind A · utility
14Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1995 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Jul 6, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C27/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Nb-base alloys that include Ti, Hf, Cr, Al and Si as alloy constituents have a microstructure that includes a metallic solid solution phase and a mixture of intermetallic silicide phases. The metal silicide phases include an M.sub.3 Si silicide, where M comprises Nb, Ti or Hf, and an M.sub.5 (Si, Al).sub.3 silicide, where M comprises Nb, Ti or Hf. These alloys have mechanical properties such as low temperature fracture toughness, high temperature fracture strength, high temperature stress rupture strength and high temperature creep resistance, that meet or exceed those of certain Ni-base superalloys.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.