Abstract
Friction stir welds in AA-6061using filler plate were analyzed to determine their microstructure, mechanical properties, and corrosion behaviour. Plates of 2mm thick of AA-6061 grade were butt welded by friction stir welding (FSW) process using filler plate. The tool used for this process is sub shoulder tool which is different from conventional FSW. Corrosion resistance of the welds was evaluated by conducting Potentiodynamic Polarization (PDP) study using electro chemical analyzer. Metal refilling during friction stir welding of thin plates by using commercial pure aluminium filler plate is found to improve corrosion resistance.
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