Compared with other aluminum alloys, higher elastic modulus, lower density, higher specific strength and more
favorable damage tolerance properties promote the application of Al-Li alloys in the aerospace industry (Rioja et
al., 2012). 2196 Al-Li alloy is a third-generation Al-Cu-Li-Mg-Ag system aluminum-lithium alloys registered in
the United States Aluminum Association by the Canadian company Alcan, mainly for extrusion which is widely
used in the latest generation of civil aircraft in Boeing and Airbus. 2196-T8511 extrusion is primarily used to
strengthen the aircraft body parts and manufacture parts with damage-resistant properties. In addition, 2196-T8511
extrusion can also be used in aircraft flooring components (beams, rails, etc.), wing stringers and other body
frames