Process for the desensitisation to intercrystalline corrosion of 2000 and 6000 series Al alloys and corresponding products
US5643372A · kind A · utility
8Cited by
4References
13Claims
0Family size
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Key dates
| Filing date | Aug 15, 1994 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | Aug 15, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/057
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improvement to a process for treating an aluminum alloy for the series AA 2000 or AA 6000 comprising solution heat treating, quenching and natural or artificial aging, in which conventional heat solution heat treating is defined as solution heat treating the alloy at a temperature which is 5.degree. to 10.degree. C. below a known eutectics melting temperature for the alloy. The improvement comprises solution heat treating at a temperature which is 10.degree. to 100.degree. C. below the conventional solution heat treating temperature in order to desensitize the alloy to intercrystalline corrosion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.