AS, A. ., A. . AA, I. . PP, O. . PO, G. . TA, and O. . JK. “Effect of Copper Addition and Solution Heat Treatment on the Mechanical Properties of Aluminum Alloy Using Formulated Bio-Quenchant Oils”. Engineering and Applied Science Research, vol. 47, no. 3, Sept. 2020, pp. 297-05, https://ph01.tci-thaijo.org/index.php/easr/article/view/217399.