Study on Mechanical Propreties of Friction Stir Welded Dissimilar AA2024 and AA7075 Aluminum Alloy Joints

摘要

The joining of dissimilar AA2024 and AA7075 aluminium plates of 6 mm thickness was carried out by friction stir welding (FSW) technique. In the present investigation, the high strength AA2024 T3 and 7075-T6 were welded by the FSW process. To certain the optimal mechanical properties by varying the rotational speed from 900 to 1400 rpm and welding speed between 30 to 60 mm/min. This work was aimed at studying the mechanical properties in dissimilar aluminum alloy joints. In this experimental the testing of mechanical properties input parameters, for example rotational speed, tool speed and axial force with appropriate welding parameters and the mechanical properties of FSW dissimilar aluminum alloy AA2024 and AA7075 has tested with the assistance of general testing machine, Higher mechanical properties are gotten with square pin profile tool at a rotation speed of 1400rpm and welding pace of 60mm/min. The test results revealed that sound imperfection free joints could be acquired when the high quality AA2024. The rigidity was enhanced at high heat input.