Abbas, A. and Abdulkadhum, H. 2019. Effect of Shoulder–Workpiece Interference Depth on the Quality of Friction Stir Welding of AA7075-T6 Aluminium Alloy. Association of Arab Universities Journal of Engineering Sciences. 26, 1 (Mar. 2019), 150-159. DOI:https://doi.org/10.33261/jaaru.2019.26.1.020.