عبدالله لعل پور - Material Science group, Engineering Faculty, Yazd University, Yazd, Iran.
مسعود مصلایی پور - Material Science group, Engineering Faculty, Yazd University, Yazd, Iran.
علی اشرفی - Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran.

In the present study, friction stir processing (FSP) technique was carried out on the AA۲۰۲۴ sheet at different traverse speed (۶۳ to ۲۵۰ mm/min) and rotation speed (۳۱۵ to ۸۰۰ rpm). The temperature and grain size of stirred zone (SZ) were measured and their relationship was analyzed and effect of FSP parameters on the grain size of SZ was determined. Experiment and analytical investigations revealed that SZ grain size complies the exponential temperature-dependent relationship and can be defined the mathematical equation. Calculations indicate that a change in operational variables (rotation and traverse speeds) makes no variation in strain rate, and it is constant.

Friction Stir Processing (FSP), Zener-Hollomon, Aluminum Alloy ۲۰۲۴, grain size., فرایند اصطکاکی اغتشاشی, زنر-هالومن, آلومینیوم آلیاژی ۲۰۲۴ و اندازه دانه.