Ultra high strength weldable aluminium-lithium alloys - contain copper, magnesium, silver and one or more grain refiners

摘要

Al alloy consists of (in wt.%) Cu 2.0-6.8 pref. 3.0-6.5 esp. 4.0-6.5, Mg 0.01-3.0 pref. 0.05-2.0 esp. 0.10-1.0, Ag 0.01-2.0 pref. 0.05-1.2 esp. 0.10-1.0, Li 0.05-4.1 pref. 0.20-3.1 esp. 0.50-2.7, grain refiners (I) 0.05-1.0 pref. 0.05-0.6 esp. 0.05-0.5 and Al the balance. (I) is selected from Zr, Cr, Mn, Ti, B, Hf, V, TiB2 and mixts. of these. Similar alternative alloys are Al-Mg based.