Aluminum-lithium alloys and method
US4648913A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1984 |
| Grant date | Mar 10, 1987 |
| Priority date | — |
| Expiry date | Mar 29, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An aluminum base alloy wrought product suitable for aging and having the ability to develop improved strength in response to an aging treatment without impairing fracture toughness properties is disclosed. The product is comprised of 0.5 to 4.0 wt. % Li, 0 to 5.0 wt. % Mg, up to 5.0 wt. % Cu, 0 to 1.0 wt. % Zr, 0 to 2.0 wt. % Mn, 0 to 7.0 wt. % Zn, 0.5 wt. % max. Fe, 0.5 wt. % max. Si, the balance aluminum and incidental impurities. The product has imparted thereto, prior to an aging step, a working effect equivalent to stretching an amount greater than 3% in order that, after said aging, improved strength and fracture toughness combinations are obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.