Structure and Properties of AMg2M Alloy Joints Made by Argon Nonconsumable – Arc Welding and Friction Stir Welding

Abstract:

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 R_σ = 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.

• Periodical: Applied Mechanics and Materials (Volume 682)
• Pages: 166-169
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.682.166
• Online since: October 2014
• Authors: A.G. Poklaytsky, I.N. Klochkov, S.I. Motrunich
• Keywords: Aluminum Alloy AMg2M, Argon Arc Welding TIG, Fatigue Resistance, Friction Stir Welding, Structure, Tensile Strength

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