Post Welded Offsw Joints On Acrolein Coating
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Abstract
Friction stir welding is a trending area in welding distribution as it has great demand in the automotive and aviation industries. This paper deals with the relative study of the influence of deviations on transverse speed to tensile behavior of AA6061 - AZ61 butt welded joints for both the Coated Friction Stir Welding (CFSW) and Normal Friction Stir Welding (NFSW). AA6061 - AZ61 alloy plates are butt welded with transverse speed which are ranging from 60 mm/min. to 120 mm/min, whereas the axial and rotational speed are maintained as constant. The welded plates are then coated with acrolein of about 25µm thick by using pressure die casting machine. Tensile behavior of the CFSW joints and NFSW joints are evaluated with respect to microhardness, tensile strength and elongation. Micro structures of Nugget Stir Zone (NSZ) are examined to study the reasons for variations in the tensile strength. Electrochemical corrosion behavior of CFSW and NFSW joints are assessed by potentio-dynamic polarization. The advantages of integrated bonding in Aluminum and Magnesium alloy weldments are better in terms of corrosion resistance, tensile strength and elasticity.
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