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| Modeling of Hot Deformation Behavior of 55SiMnMo Medium-Carbon Steel |
| YAN Tao1,2,YU En-lin1,2,ZHAO Yu-qian3 |
1. National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004, Hebei, China
2. College of Mechanical Engineering, Yanshan University,Qinhuangdao 066004, Hebei, China
3. Control Engineering College, Northeast University at Qinhuangdao,Qinhuangdao 066004, Hebei, China |
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Abstract The hot deformation behavior of 55SiMnMo steel was studied by hot isothermal compression tests at 950-1100 �� and strain rates of 0. 01-10 s-1 using a Gleeble 3500 thermal simulation machine. Experimental results show that the peak stress increases with decreasing deformation temperature and increasing strain rate. When the strain rate = 0. 01 s-1, or when =0. 1 s-1 and the deformation temperature T��1000 ��, the dynamic recrystallization (DRX) of 55SiMnMo steel occurs. The hot flow stress constitutive equation, peak strain equation, as well as critical stress and strain for DRX initiation are obtained based on the experimental data. A comparison between the theoretical and experimental results verifies the reliability of the flow stress equation.
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Received: 20 August 2012
Published: 18 November 2013
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Corresponding Authors:
Tao YAN
E-mail: yantao@ysu.edu.cn
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2013, Vol. 20 
