Effect on the Property of 2195 Al-Li Alloy Laser-Welded Joints with Different Filler Materials

In order to improve the performance of welded joints in Al-Li alloys, butt consisting 2 mm thick 2195-T8 alloy plates are fabricated by laser beam welding with different filler wires this paper. The ER2319CT, ER4047, and without investigated context microstructure, distribution alloying elements, burning loss tensile strength. From fusion boundary center weld seam (WS), crystal morphologies vary sequence fine equiaxed grains, columnar dendrite, dendrite. grains dendrite disappear certain areas WS ER2319CT. rates Li Cu higher than those filler. AlLiSi Al2Cu identified as strengthening phases while Al2Cu, Al2CuLi, Al6CuLi3 Compared wire, more mechanical properties wires. Both types can joints, ER2319CT is effective.