Mina Ahmadi - School of Automotive Engineering, Iran University of Science and Technology;
Mostafa Pahlavani - Project Expert of Vice Chancellor of Engineering, Bahman Motor Company (BMC)
Kazem Reza Kashyzadeh - Material Life Estimation and Improvement Lab., Sharif University of Technology
Meraj Ahmadi - Department of Material Engineering, Khajeh Nasir Toosi University of Technology

In this study the effect of Friction Stir Welding (FSW) parameters on mechanical properties of Al6061 has been investigated. These properties involve ultimate tensile and hardness of the material. For this purpose 9 different conditions with three variable factors which change in three levels have been chosen. These factors are rotational speed of tools, linear velocity and pin profiles including: square, cylindrical and conical. The welding was done in the selected situations and after that the samples of tests were prepared. In the following the Vickers’ hardness test and tensile test was utilized on samples. By studying the results, it was calculated that the pin with conical profile shows better performance among three selected profiles. Moreover the results have been influenced positively by rotational speed, while the linear velocity has positive effect. In another hand it can be illustrated that pin profile plays the most significant role, however the rotational speed and linear velocity have less effect on the results

Friction Stir Welding Tool, Mechanical Properties, Ultimate Tensile, Elongation, ExperimentalTests, Vickers’ Hardness