Aging process for 7000 series aluminum base alloys
US4431467A · kind A · utility
26Cited by
5References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 13, 1982 |
| Grant date | Feb 14, 1984 |
| Priority date | — |
| Expiry date | Aug 13, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/053
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Aluminum base 7000 series alloys can have improved tensile properties when, after heat treatment and subsequent quenching, they are subjected to a three-step aging process comprising a first aging step at 190.degree.-230.degree. F., a second aging step at over 230.degree. F. and a third aging step at 315.degree.-380.degree. F. The improved process is particularly effective in improving the tensile properties of slowly quenched materials such as large extrusions or forgings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.