Actual Problems in Machine Building 2020 Vol. 7 No. 1-2

Actual Problems in Machine Building. Vol. 7. N 1-2. 2020 Innovative Technologies in Mechanical Engineering ____________________________________________________________________ 20 STUDY OF LASER WELDING OF Al-Mg-Li ALLOY WITH FILLER WIRE Malikov A.G., Ph.D. (Engineering), Senior Researcher, e-mail: smalik@ngs.ru Golyshev A.A., Ph.D.(Physics and Mathematics), Scientific associate, e-mail: alexgol@itam.nsc.ru Vitoshkin I.E., Laboratory assistant, e-mail: igor.vitoshkin.97@mail.ru Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, 4/1 Institutskaya str., Novosibirsk, 630090, Russian Federation Abstract In the work, experimental studies were conducted to optimize the laser welding process without and with wire from an alloy of AMg6, an aluminum-lithium alloy of the Al-Mg-Li system. The microstructure of welded joints is investigated. It was found that at a wire feed speed equal to the laser beam speed, high-quality welds are obtained Keywords laser welding, aluminum-lithium alloy, filler wire, microstructure.