Abstract
Friction stir welding of AA2014 aluminium alloy was performed at seven diffrent speed combinations. Optical microscopy and FESEM were used to investigate the metallurgical behavior of the weld joints. Microhardness and corrosion resistance were found higher at low rotation speed and high traverse speed. Higher microhardness is the result of high traverse i.e. 90 mm/min (from traverse speed variations) and low rotational speed i.e. 508 rpm (from rotation speed variations). These parameters results in reasonably smaller matrix grain size that impacted the joint’s microhardness. There exists a small difference in both weld joint’s percentage elongation, whereas their tensile strength is similar.
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