AL-CU-MG-AG-MN ALLOY FOR STRUCTURAL APPLICATIONS REQUIRING HIGH STRENGTH AND HIGH DUCTILITY

摘要

An aluminum alloy having improved strength and ductility, comprising Cu 3.5 - 5.8 wt. %, Mg 0.1 - 1.8 wt. % Mn 0.1 - 0.8 wt. Ag 0.2 - 0.8 wt.% Ti 0.02 - 0.12 wt.% and optionally one or more selected from the group consisting of Cr 0.1 - 0.8 wt.%, Hf 0.1 - 1.0 wt.%, Sc 0.03 - 0.6 wt.%, and V 0.05 - 0.15 wt.%. balance aluminum and incidental elements and impurities, and wherein the alloy is substantially zirconium-free.