Bobbin Tool Friction Stir Welding of Aluminum Using Different Tool Pin Geometries: Mathematical Models for the Heat Generation

In this work, three mathematical models for the heat generation during bobbin tool friction stir welding (BT-FSW) of aluminum using pin geometries have been proposed. The utilized and updated available conventional (CT-FSW). For validation models, BT-FSW experiments carried out alloy AA1050 different (cylindrical, square, triangular), at speeds 200, 400, 600, 800, 1000 mm/min a constant rotation speed 600 rpm. temperatures measured to be compared with that calculated from same parameters. It has found are in good agreement all investigated especially case square cylindrical pins, proving validity developed predication as well temperatures. This will allow proper designing parameters avoiding conditions can deteriorate joint quality properties.