مشخصات پژوهش

There is a growing interest in friction stir welding/processing (FSW/P) of metals and alloys because they have capacities to overcome some problems of the conventional fusion welding processes such as large distortions, solidification cracking, macro and micro segregations, dendritic structures, gas and shrinkage porosities, solid inclusions, color change, formation of brittle intermetallics between dissimilar materials, wide heat affected zone (HAZ), high energy consumption, environmental pollution, etc. On the other hand, it causes grain refinement by various deformation and restoration mechanisms due to the presence of both strain and heat. Accordingly, efforts are underway to replace conventional fusion processes by FSW/P in different industrial sectors with great potential.