Abubakar Kazeem, Nur Azam Badarulzaman, and Wan Fahmin Faiz Bin Wan Ali. “Effect of Isothermal Heat Treatment on Hardness of X7475 Aluminium Alloys”. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, vol. 55, no. 2, Mar. 2024, pp. 233-9, https://semarakilmu.com.my/journals/index.php/fluid_mechanics_thermal_sciences/article/view/3073.