Farida, Ida, and Sulardjaka. 2020. “The Effect of Tool Rotation Speed Variation to Hardness and Microstructure in The Welding of Composite Alsitib-7,5%Sic by Friction Stir Welding Method”. International Journal of Psychosocial Rehabilitation 24 (2): 8173-78. https://doi.org/10.61841/hy8jxf70.