Essa, Meshal, and Fahad Salem Alhajri. “A Survey of the Parameters of the Friction Stir Welding Process of Aluminum Alloys 6xxx Series”. Engineering International 9, no. 1 (June 1, 2021): 51–60. Accessed May 3, 2024. https://abc.us.org/ojs/index.php/ei/article/view/548.