摘要
采用双道次热压缩试验对PCrNi3MoV钢的静态再结晶行为进行了研究,分析了不同变形速率、第一道次真应变、变形温度以及初始晶粒尺寸对其静态再结晶体积分数以及晶粒尺寸变化的影响,并且基于试验数据建立了PCrNi3MoV钢的静态再结晶动力学模型和晶粒尺寸模型。结果表明:在相同间隔时间内,随着第一道次真应变、变形速率、变形温度的降低以及初始晶粒尺寸的增大,静态再结晶体积分数减小,其中静态再结晶体积分数受变形速率和变形温度影响相对较大,受第一道次真应变和初始晶粒尺寸的影响相对较小。采用Origin软件对试验数据进行线性拟合计算得出PCrNi3MoV钢的静态再结晶激活能为246411.32 J/mol,通过将PCrNi3MoV钢静态再结晶动力学模型计算获得的预测值与试验值进行对比,得出该模型具有可信度。
The static recrystallization behavior of PCrNi3MoV steel was studied by double-pass hot compression test,and the effects of different strain rate,first pass true strain,deformation temperature and initial grain size on static recrystallization volume fraction and grain size of the steel were analyzed.Based on the experimental data,the static recrystallization kinetic model and grain size model of the PCrNi3MoV steel were established.The results show that in the same interval,the static recrystallization volume fraction of the PCrNi3MoV steel decreases with the decrease of the first pass true strain,deformation rate,deformation temperature and the increase of the initial grain size,among them,the static recrystallization volume fraction is greatly affected by the strain rate and deformation temperature,and relatively less by the first pass true strain and initial grain size.Using Origin software to linearly fit the test data,it is calculated that the static recrystallization activation energy of the PCrNi3MoV steel is 246411.32 J/mol,by comparing the predicted value calculated by the static recrystallization kinetic model of the PCrNi3MoV steel with the experimental value,it is concluded that the model is reliable.
作者
姬雅倩
周旭东
陈学文
张建
高全德
李永亮
马姣
JI Ya-qian;ZHOU Xu-dong;CHEN Xue-wen;ZHANG Jian;GAO Quan-de;LI Yong-liang;MA Jiao(School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471023,China;Henan Zhongyuan Special Steel Equipment Manufacturing Co Ltd,Jiyuan 454685,China)
出处
《材料热处理学报》
CAS
CSCD
北大核心
2022年第2期152-160,共9页
Transactions of Materials and Heat Treatment
基金
国家重点研发计划资助项目(2020YFB2008400)。
