Modeling of Hot Deformation Behavior of 55SiMnMo Medium-Carbon Steel

被引：6

作者：

Yan Tao ^{[1
,2
]}

Yu En-lin ^{[1
,2
]}

Zhao Yu-qian ^{[3
]}

机构：

[1] Yanshan Univ, Natl Engn Res Ctr Equipment & Technol Cold Strip, Qinhuangdao 066004, Hebei, Peoples R China

[2] Yanshan Univ, Coll Mech Engn, Qinhuangdao 066004, Hebei, Peoples R China

[3] Northeast Univ Qinhuangdao, Control Engn Coll, Qinhuangdao 066004, Hebei, Peoples R China

来源：

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2013年 / 20卷 / 11期

关键词：

dynamic recrystallization; constitutive equation; work hardening; activation energy; FLOW-STRESS; PLASTIC-FLOW; PREDICTION; SIMULATION; NB;

D O I：

10.1016/S1006-706X(13)60207-1

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The hot deformation behavior of 55SiMnMo steel was studied by hot isothermal compression tests at 950-1100 degrees C 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 epsilon= 0.01 s(-1), or when epsilon=0.1 s(-1) and the deformation temperature T >= 1000 degrees C, 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.

引用

页码：125 / 130

页数：6

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