Cell component, in particular for supersonic aircraft, made of high durability aluminium alloy, good damage tolerance and high stress corrosion resistance

摘要

An aircraft component is made of an Al alloy containing 2.00-3.00 wt.% Cu, 1.40-1.90 wt.% Mg, 0.20-0.70 wt.% Mn, 0-0.30 wt.% Fe, 0-0.30 wt.% Ni, 0-0.15 wt.% Ti, at least 0.05 wt.% Si and 0-1.10% Ag, where 0.40 Si + 0.4 Ag 0.60 and Si + Ag + 1.1 Mg 2.6. One alloy exemplified contains 0.40-0.60% Si and no Ag, and another contains 0.20-0.40% Si and 0.40-0.60% Ag.