Abstract:
The hot compression experiments were carried out on Gleeble-1500D thermal simulator
system and the hot deformation performance of non-quenched and tempered steel
49MnVS3 between 950°C∼1200°C with strain rate of 0.1~10 sec-1
were investigated by processing maps of dynamic material model. The deformation
zone where dynamic recovery and dynamic recrystallization occurred is obtained
according to true stress-strain curve. The variation law of strain rate sensitive
factor m and power dissipation η is analyzed. Based on the analysis on m,η
and instability criterion