摘要
在Gleeble-3800热模拟实验机上利用双道次热压缩的实验方法,获得了GCr15轴承钢在不同实验条件下的应力-应变曲线,研究了该钢种在高温变形道次间隔时间内的静态软化行为以及再结晶规律,模拟材料热加工组织性能,为制定合理的轧制工艺提供实验基础和理论依据。分析了变形温度、应变速率和道次间隔时间对其静态再结晶行为的影响,建立了GCr15钢静态再结晶动力学模型,相应的静态再结晶激活能约为118.72kJ/mol。结果表明:静态再结晶体积分数随变形温度的升高、应变速率的提高或道次间隔时间的延长而增大。
The static recrystallization behavior of GCr15 steel during hot deformation was studied by using Gleeble-3800thermo-mechanical simulator through two-pass hot compression experiments.The stress-strain curves of the investigated steel with different experimental parameters were obtained.The effects of deformation temperature,strain rate and the interval time on the static recrystallization behavior were studied.The static recrystallization kinetics model of the investigated steel was established,and the static recrystallization activation energy was about 118.72kJ/mol.The results show that the volume fraction of static recrystallization can obtained more with increasing deformation temperature,raising strain rate and extending interval time.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2017年第8期671-677,共7页
Journal of Iron and Steel Research
基金
重型机械协同创新资助项目(JX2014-09)
河北省高校百名优秀创新人才支持资助项目
十三五专项"轴承钢冶金质量控制基础理论与产业化关键共性技术研究"资助项目(2016YFB0300101)
关键词
GCR15轴承钢
双道次热压缩实验
静态再结晶
激活能
动力学模型
GCr15 bearing steel
two-pass hot compression experiment
static recrystallization
activation energy
kinetic model
作者简介
刘子龙（1991-），男，硕士；E-mail：longyajue@foxmail．com
通讯作者：王玉辉（1978-），男，硕士，副研究员；E-mail：yhwang@ysu．edu．cn
