A method of obtaining a recrystallised alloy based on aluminum

摘要

Products made of Al alloy containing from 1 to 3.5% of Li, up to 4% of Cu, up to 5% of Mg, up to 3% of Zr and additions of Mn, Cr and/or Zr in the following quantities by weight:… Zr /= 0.10% - Mn /= 0.8% - Cr /= 0.20%… with %Zr/0.03 + %Mn/0.3 + %Cr/0.07 1. …??The alloy is recrystallised and has a grain size smaller than 200  mu m. …??The manufacturing range essentially comprises a final subtempering at temperatures lower than or equal to the temperature resulting in the maximum hardening of the alloy and for periods shorter than those resulting in maximum hardening at each temperature.