ALUMINUM ALLOY UNDERSTANDING LITHIUM WITH IMPROVED FATIGUE PROPERTIES

摘要

aluminum alloy comprising lithium with improved mechanical strength and toughness. the invention relates to a 2xxx molten alloy product comprising 0.05 to 1.9% by weight of li and 0.005 to 0.045% by weight of cr and / or v. the invention also relates to a molten 2xxx alloy product comprising from 0.05 to 1.9% by weight of li and from 0.005 to 0.045% by weight of cr and / or v. finally, the invention relates to a structural element of the aircraft, more preferably a lower surface or an upper surface element, of which the skin and reinforcements come from the same starting material, a stringer or rib, comprising a forged product.