Studied are the structural peculiarities of joints on AMg2M alloy of 2 mm thickness made by TIG and FSW. Their mechanical properties and fatigue resistance characteristics at alternating axial loads with asymmetry ratio of stress cycle Rσ = 0.1 were determined.It is determined that the welded joints failure along the base metal at tension and have ultimate strength at 170 MPa level. Restricted endurance limits of the joints, made FSW, exceed corresponding indices of the joints, made by NCAAW, for 10-15% in 105 – 2·106 fluctuation cycle endurance range and make 90-95% from the values of this index for the base metal.
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