Method for processing of continuously cast aluminum sheet
US6811625B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 17, 2002 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Dec 18, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C21/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method is disclosed for making relatively low cost sheet material of magnesium- and manganese-containing aluminum alloy for high elongation forming of articles of complex configuration. The alloy is continuously cast with an as-cast gage of 6-30 mm and immediately hot rolled with final strip exit temperature between 200 C. and 350 C., and net rolled gage reduction of 30-80% to 3-12 mm, and coiled. The hot rolled coil is annealed at 470-560° C. to homogenize the microstructure. After cooling to ambient, the coil is cold rolled to desired sheet thickness, but with a net gage reduction of 50-90%. After suitable recrystallization of the cold worked microstructure the sheet is ready for hot, high elongation forming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.