Superplastic aluminium alloy sheets
US4618382A · kind A · utility
30Cited by
1References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1984 |
| Grant date | Oct 21, 1986 |
| Priority date | — |
| Expiry date | Oct 12, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S420/902
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Sheets of high strength superplastic Al--Zn--Mg alloys or Al--Cu alloys which having a maximum grain size below 30 .mu.m on average are described. These alloy sheets are obtained by a method which is characterized by keeping a homogenized and hot worked ingot of the alloy at two different temperatures for sufficient times whereby a fine grain structure is formed in the alloy to impart superplasticity to the alloy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.