Lightweight armor plate and method
US4626294A · kind A · utility
35Cited by
15References
32Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 28, 1985 |
| Grant date | Dec 2, 1986 |
| Priority date | — |
| Expiry date | May 28, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/047
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Aluminum armor plate containing relatively high amounts of magnesium, 6-10%, along with about 0.1-1% manganese and up to 0.23% chromium is made by cold rolling aluminum alloy rolling stock to a cold reduction of at least 10% with or without prior hot rolling. Susceptibility to stress conversion cracking is overcome by heating the alloy to an elevated temperature of typically 600.degree. or 700.degree. F. or more followed by cooling the alloy at a controlled cooling rate of at least 10.degree. F. per minute. The heating and the cooling precede the cold rolling operation and may be associated with hot rolling if such is employed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.