The Influence of Friction Stir Welding and Process Parameters on the Static and Dynamic Mechanical Properties of 2024-T3 Aluminum Alloy Weldments


The present work is aimed to study the friction stir welding and process for thealuminum alloy 2024-T3, a threaded pin with a diameter of 6 mm and a concavedshoulder of 18 mm welding tool was used. The single pass friction stir welding(FSW) process was performed with clockwise tool rotation at different speeds andvariable feeding speeds. The specimens were tested to determine the best ultimatetensile strength ( ult) and compared with the as received metal. In addition to frictionstir welding (FSW), another phase of welding named friction stir process (FSP) wasused. The best condition out of the FSW variables was selected in order to examinethe double pass welding processes. It was found that the best result is in forwardwelding travel and counterclockwise tool rotation. The maximum tensile strengthachieved at friction stir welding process was 72% of the base metal and didn’timprove in the FSP process. On the other hand, the fatigue endurance limit wasimproved for FS weld ment when followed by FSP, where the reduction in fatigueendurance limit for FSW specimen was 36% while for FSP specimen was 15% of thebase metal.