ALUMINUM ALLOY WITH ADDITIONS OF COPPER, LITHIUM AND AT LEAST ONE ALKALINE EARTH METAL OR RARE EART

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PROBLEM TO BE SOLVED : To provide an aluminum alloy that may be suited for a friction stir welding process. SOLUTION : An aluminum alloy includes aluminum, about 1.8 to about 5.6 wt.% of copper, about 0.6 to about 2.6 wt.% of lithium, and at least one of lanthanum up to about 1.5 wt.%, strontium up to about 1.5 wt.%, cerium up to about 1.5 wt.%and praseodymium up to about 1.5 wt.%. SELECTED DRAWING : None COPYRIGHT : (C)2019, JPO&INPIT