Author/Authors :
Shaban Ghazani، M. نويسنده Young Researchers and Elite Club, Ilkhchi Branch, Islamic Azad University, Ilkhchi, Iran. , , Vajd، A. نويسنده Technical College of Tabriz No.2, Technical and Vocational University, Tabriz, Iran. , , Mosadeg، B. نويسنده Technical College of Tabriz No.2, Technical and Vocational University, Tabriz, Iran. ,
Abstract :
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.
