METHODS FOR ARTIFICIALLY AGING ALUMINUM-ZINC-MAGNESIUM ALLOYS, AND PRODUCTS BASED ON THE SAME

摘要

New methods for aging aluminum alloys having zinc and magnesium are disclosed. The methods may include first aging the aluminum alloy at a first temperature of from about 330° F. to 530° F. and for a first aging time of from 1 minute to 6 hours, and then second aging the aluminum alloy at a second temperature for a second aging time of at least 30 minutes, with the second temperature being lower than the first temperature.