Wakchaure, Kiran N, and A. G. Thakur. “Mathematical and Experimental Examination of the Effect of the Stepped Pin Tool Profile on the Characterization of AA 6061-T6 Underwater Friction Stir Welding”. Metallurgical and Materials Engineering, vol. 28, no. 4, Dec. 2022, pp. 593-24, doi:10.56801/MME869.