Effect of welding parameters on mechanical properties of dissimilar Friction Stir Processed AA 8011 and A A 5083-H321 aluminium alloys

摘要

The weight reduction and fuel economy are gaining importance in marine, defence and transportation industries to get the quality of the welded joints. The problems in fusion welding of aluminium alloys such as solidification shrinkage, hot cracking and residual stresses which degrade the strength of the welded joints. The innovative green joining technology, friction stir welding (FSW) process was implemented in addition to nanoparticles such as AI2O3 and SiC in similar and dissimilar aluminium alloys. In this work, the study was done on the effects of Friction Stir Processing (FSP) parameters on microhardness and tensile properties of AA5083-H321 and AA8011-H24 dissimilar aluminium alloy joints. The tensile test was conducted to evaluate the tensile properties of the welded joints. The Vickers microhardness test was carried out to examine the quality of the welded joints. It was observed that the similar AA8011 aluminium alloy combination with nanoparticle Al2O3 has maximum tensile properties and microhardness compared to other combination of joints.