Heat-resistant TiAl alloy excellent in room-temperature fracture toughness, high-temperature oxidation resistance and high-temperature strength
US4983357A · kind A · utility
6Cited by
4References
25Claims
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Key dates
| Filing date | Aug 3, 1989 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Aug 3, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C14/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A heat-resistant TiAl alloy having excellent room-temperature fracture toughness, high-temperature oxidation resistance and high-temperature strength is disclosed. Said alloy consists essentially of from 29 to 35 wt. % aluminum, from 0.5 to 20 wt. % nobium, and at least one element selected from the group consisting of from 0.1 to 1.8 wt. % silicon, and from 0.3 to 5.5 wt. % zirconium, the balance being titanium and incidental impurities. Preferably impurities are limited to 0.6 wt.-% oxygen, 0.1 wt.-% nitrogen and 0.5 wt.-% hydrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.