Transformation process of Al—Cu—Li alloy sheets
US11667994B2 · kind B2 · utility
0Cited by
13References
18Claims
0Family size
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Key dates
| Filing date | Nov 8, 2018 |
| Grant date | Jun 6, 2023 |
| Priority date | — |
| Expiry date | Nov 8, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/057
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention concerns a process to manufacture a flat-rolled product, notably for the aeronautic industry containing aluminum alloy, in which, notably a flattening and/or stretching is performed with a cumulated deformation of at least 0.5% and less than 3%, and a short heat-treatment is performed in which the sheet reaches a temperature between 130° C. and 170° C. for a period of 0.1 to 13 hours. The invention notably makes it possible to simplify the forming process of fuselage skins and to improve the balance between static mechanical strength properties and damage tolerance properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.