Aslman, Ali A., Ayad M. Takhakh, and Kadhim K. Resan. 2016. “Study the Mechanical Properties and Numerical Evaluation of Friction Stir Processing (FSP) for 6061-T6 Aluminum Alloys”. Nahrain University College of Engineering Journal 19 (2): 255-64. https://oldjournal.eng.nahrainuniv.edu.iq/index.php/main/article/view/19.