Experimental Study the Effect of Tool Design on the Mechanical Properties of Bobbin Friction Stir Welded 6061-T6 Aluminum Alloy. Al-Khwarizmi Engineering Journal, [S. l.], v. 14, n. 3, p. 1–11, 2018. DOI: 10.22153/kej.2018.01.003. Disponível em: https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/85. Acesso em: 2 jan. 2025.