PROCESS FOR TRANSFORMING AL-CU-LI ALLOY SHEETS ENHANCING FORMABILITY AND RESISTANCE TO CORROSION

摘要

The invention relates to the process for manufacturing a laminated product having a thickness of 0.5 to 10 mm in aluminum alloy base alloy comprising in particular copper and lithium in which, after dissolution and quenching, a treatment is carried out. thermal short wherein the sheet reaches a temperature between 145 ° C and 175 ° C for 0.1 to 45 minutes, the heating rate being between 3 and 600 ° C / min. The sheet obtained at the end of the process according to the invention has a high resistance to corrosion and is able to be shaped for the production of a structural element for an aircraft, in particular an aircraft fuselage skin. .