摘要
通过Gleeble-3500型热/力模拟试验机对Fe-0.1C-5Mn钢进行双道次热压缩试验,研究了变形温度(850,900,950,1000℃)、道次间隔时间(1,5,10,20,50,100 s)、应变速率(0.01,0.1,1 s^(-1))对该钢在热变形期间静态再结晶行为的影响,并基于应力、应变数据,绘制功率耗散效率图。结果表明:提高变形温度、延长道次间隔时间、增加应变速率有助于试验钢在双道次热压缩变形期间发生静态再结晶,其静态再结晶激活能为210 k J·mol^(-1);试验钢的稳定变形区分布于短道次间隔时间(1,10 s)的高应变速率区域(0.2~1 s^(-1)),以及长道次间隔时间(100 s)的低温低应变速率区域(850~925℃/0.01~0.2 s^(-1))。
The double-pass thermal compression test of Fe-0.1C-5Mn steel was carried out by Gleeble-3500 thermal/mechanical simulator,and the effects of deformation temperature(850,900,950,1000℃),pass interval(1,5,10,20,50,100 s)and strain rate(0.01,0.1,1 s^(-1))on the static recrystallization behavior of the steel during thermal deformation were studied.On the basis of the stress and strain data,the power dissipation efficiency diagram was drawn.The results show that increasing the deformation temperature,prolonging the pass interval or increasing the strain rate was helpful to the static recrystallization of the test steel during the double-pass thermal compression deformation.The static recrystallization activation energy of the steel was 210 kJ·mol^(-1).The stable deformation region of the test steel was in the high strain rate region(0.2^(-1)s^(-1))with short pass interval(1,10 s),and in the low temperature and low strain rate region(850-925℃/0.01-0.2 s^(-1))with long pass interval(100 s).
作者
王魏军
岑琼瑛
张梅
汪杨
WANG Weijun;CEN Qiongying;ZHANG Mei;WANG Yang(School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China)
出处
《机械工程材料》
CAS
CSCD
北大核心
2023年第5期61-65,93,共6页
Materials For Mechanical Engineering
基金
国家重点研发计划项目(2017YFB0304402)。
