Al—Zn—Cu—Mg alloys with high strength and method of fabrication
US12421578B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2022 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Sep 13, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/053
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a rolled product made of aluminum alloy with a thickness of at least 50 mm comprising (in weight %): Zn 6.9-7.5; Mg 1.8-2.2; Cu 1.8-2.2, where the sum Cu+Mg is between 3.8 and 4.2; Zr 0.04-0.14; Mn 0-0.1; Ti 0-0.15; V 0-0.1; Fe ≤0.15; If ≤0.15; impurities ≤0.05 each and ≤0.15 total, balance aluminum. The invention also relates to the method of manufacturing such a product. The products according to the invention are particularly advantageous because they have a very favorable compromise between static mechanical strength, toughness and environmental-assisted cracking performance under conditions of high stress and humid environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.