CRYOGENICALLY FORMING WORK-HARDENED SHEETS OF ALUMINUM OR ALUMINUM ALLOYS

摘要

In a method for cryogenically forming a sheet of aluminum or a solid solution strengthened aluminum alloy wherein the sheet has a maximum thickness of about 0.2 inch, said method comprising forming said sheet into a shaped article of desired configuration by deforming said sheet at a cryogenic temperature in the range of about minus 100 DEG C. to about minus 200 DEG C.