2xxx series aluminum lithium alloys

Abstract

Wrought 2xxx aluminum lithium alloy products having a thickness of from 0.040 inch to 0.500 inch are disclosed. The wrought aluminum alloy products contain from 3.00 to 3.80 wt. % Cu, from 0.05 to 0.35 wt. % Mg, from 0.975 to 1.385 wt. % Li, wherein −0.3*Mg−0.15Cu+1.65≦Li≦−0.3*Mg−0.15Cu+1.85, from 0.05 to 0.50 wt. % of at least one grain structure control element, wherein the grain structure control element is selected from the group consisting of Zr, Sc, Cr, V, Hf, other rare earth elements, and combinations thereof, up to 1.0 wt. % Zn, up to 1.0 wt. % Mn, up to 0.12 wt. % Si, up to 0.15 wt. % Fe, up to 0.15 wt. % Ti, up to 0.10 wt. % of any other element, with the total of these other elements not exceeding 0.35 wt. %, the balance being aluminum.

1 . A wrought aluminum alloy product having a thickness of from 0.040 inch to 0.500 inch, the aluminum alloy consisting of:
 from 3.00 to 3.80 wt. % Cu;   from 0.05 to 0.35 wt. % Mg;   from 0.975 to 1.385 wt. % Li;
 wherein −0.3*Mg−0.15Cu+1.65≦Li≦−0.3*Mg−0.15Cu+1.85; 
   from 0.05 to 0.50 wt. % of at least one grain structure control element, wherein the at least one grain structure control element is selected from the group consisting of Zr, Sc, Cr, V, Hf, other rare earth elements, and combinations thereof;   up to 1.0 wt. % Zn;   up to 1.0 wt. % Mn;   up to 0.12 wt. % Si;   up to 0.15 wt. % Fe;   up to 0.15 wt. % Ti;   up to 0.10 wt. % of any other element, with the total of these other elements not exceeding 0.35 wt. %; and   the balance being aluminum.   
     
     
         2 - 5 . (canceled) 
     
     
         6 . The aluminum alloy of  claim 1 , comprising at least 3.10 wt. % Cu. 
     
     
         7 . The aluminum alloy of  claim 1 , comprising at least 3.20 wt. % Cu. 
     
     
         8 . The aluminum alloy of  claim 1 , comprising at least 3.30 wt. % Cu. 
     
     
         9 . (canceled) 
     
     
         10 . The aluminum alloy of  claim 1 , comprising not greater than 3.75 wt. % Cu. 
     
     
         11 .- 12 . (canceled) 
     
     
         13 . The aluminum alloy of  claim 1 , comprising not greater than 3.60 wt. % Cu. 
     
     
         14 . (canceled) 
     
     
         15 . The aluminum alloy of  claim 1 , comprising at least 0.15 wt. % Mg. 
     
     
         16 . The aluminum alloy of  claim 1 , comprising not greater than 0.30 wt. % Mg. 
     
     
         17 . The aluminum alloy of  claim 1 , comprising not greater than 0.25 wt. % Mg. 
     
     
         18 . The aluminum alloy of  claim 1 , comprising at least 1.005 wt. % Li. 
     
     
         19 .- 20 . (canceled) 
     
     
         21 . The aluminum alloy of  claim 1 , comprising at least 1.150 wt. % Li. 
     
     
         22 . The aluminum alloy of  claim 1 , comprising not greater than 1.355 wt. % Li. 
     
     
         23 . (canceled) 
     
     
         24 . The aluminum alloy of  claim 1 , comprising not greater than 1.310 wt. % Li. 
     
     
         25 . (canceled) 
     
     
         26 . The aluminum alloy of  claim 1 , comprising at least 0.20 wt. % Zn. 
     
     
         27 . The aluminum alloy of  claim 1 , comprising at least 0.30 wt. % Zn. 
     
     
         28 . The aluminum alloy of  claim 1 , comprising not greater than 0.50 wt. % Zn. 
     
     
         29 . The aluminum alloy of  claim 1 , comprising not greater than 0.40 wt. % Zn. 
     
     
         30 .- 31 . (canceled) 
     
     
         32 . The aluminum alloy of  claim 1 , comprising at least 0.15 wt. % Mn. 
     
     
         33 . The aluminum alloy of  claim 1 , comprising at least 0.20 wt. % Mn. 
     
     
         34 .- 37 . (canceled) 
     
     
         38 . The aluminum alloy of  claim 1 , comprising not greater than 0.40 wt. % Mn. 
     
     
         39 .- 46 . (canceled)