Method for making a superplastically-formable AL-Mg product
US6322646A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2000 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Jun 12, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/047
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for making a superplastically formable, aluminum alloy product which consists essentially of: about 2-3.8 wt. % magnesium; at least one dispersoid-forming element selected from the group consisting of: up to about 1.6 wt. % manganese, up to about 0.2 wt. % zirconium, and up to about 0.3 w. % chromium; at least one nucleation-enhancing element for recrystallization selected from: about 0.11-1.0 wt. % silicon, up to about 1.5 wt. % copper, and combinations thereof. Said alloy product has greater than about 300% elongation at a strain rate of about 0.0001-0.003/sec and a superplastic forming temperature between about 1000-1100.degree. F. due, in part to the preferred thermomechanical processing steps applied to its intermediate plate or slab product forms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.