Method of manufacturing formed pieces of type 2024 aluminum alloy

Abstract

This invention relates to a method of manufacturing highly worked pieces of AlCuMg alloy, comprising the steps of: a) casting a plate composed of (weight per cent): Cu: 3.8-4.5 Mg: 1.2-1.5 Mn: 0.3-0.5 Si<0.25 Fe<0.20 Zn<0.20 Cr<0.10 Zr<0.10 Ti<0.10, b) possibly homogenizing at a temperature between 460 and 510° C. for 2 to 12 hrs, and preferably at a temperature between 470 and 500° C. for a duration for 3 to 6 hrs, c) hot rolling at an input temperature between 430 and 470° C., and preferably between 440 and 460° C., d) cutting out sheets, e) forming in one or several processes, such as stretch forming, drawing, flow spinning, or bending, f) solution treating between 480 and 500° C., for a duration between 5 min and 1 hr, g) quenching, wherein forming can take place before and after solution treatment and quenching. The invention is applicable in particular for manufacturing aircraft fuselage panels.

Dependencies are inferred from the claim text.