عنوان	PREDICTION OF CRITICAL STRESS AND STRAIN FOR THE ONSET OF DYNAMIC RECRYSTALLIZATION IN PLAIN CARBON STEELS
نوع پژوهش	مقاله چاپ شده
کلیدواژه‌ها	Dynamic recrystallization, Critical stress, Critical strain, Low carbon steel.
چکیده	The aim of the present study is the prediction of critical conditions (including critical strain and flow stress) for the initiation of dynamic recrystallization during thermo-mechanical processing of plain carbon steels. For this propose, torsion tests were conducted at different temperature (1050, 1100 and 1150˚C) and strain rates (0.002, 0.02 and 0.2/s). All flow curves showed a peak stress indicating that dynamic recrystallization occurs during hot deformation. The critical stress and strain were then determined based on change in strain hardening rate as a function of flow stress. Finally, the effect of deformation conditions on these parameters was analyzed.
پژوهشگران	مهدی شبان غازانی (نفر اول)، اکبر وجد (نفر دوم)، بشیر مصدق (نفر سوم)