含硼冷镦钢10B21热变形过程中的静态再结晶行为
Static recrystallization behavior of boron-containing cold heading steel 10B21 during hot deformation
薛雲泽 1徐东 2郑冰 3史胡生 4杨风国 4郑磊5
作者信息
- 1. 河北工程大学河北省高品质冷镦钢技术创新中心,河北邯郸 056038;河北太行钢铁集团有限公司河北省高校高端紧固件全流程应用技术研发中心,河北邯郸 056305
- 2. 河北工程大学河北省高品质冷镦钢技术创新中心,河北邯郸 056038
- 3. 辽宁科技大学材料与冶金学院,辽宁鞍山 114051;河北普阳钢铁集团河北省高韧性风塔钢工程研究中心,河北邯郸 056305
- 4. 河北太行钢铁集团有限公司河北省高校高端紧固件全流程应用技术研发中心,河北邯郸 056305
- 5. 河北普阳钢铁集团河北省高韧性风塔钢工程研究中心,河北邯郸 056305
- 折叠
摘要
在Gleeble-1500热模拟机上对10B21冷镦钢进行单道次压缩试验,研究了变形温度(950、1000 ℃)、变形速率(0.1、1、10 s-1)、预应变(0.10、0.15、0.20)、初始晶粒尺寸和间隙时间对10B21冷镦钢静态再结晶行为的影响.对不同变形条件下的奥氏体晶粒进行观察,并构建了 10B21冷镦钢静态再结晶动力学模型及晶粒尺寸模型.结果表明,静态再结晶体积分数与变形温度、变形速率、预应变、间隙时间呈正相关;静态再结晶晶粒尺寸与变形温度、初始晶粒尺寸呈正相关,与变形速率、预应变呈负相关.通过计算获得10B21冷镦钢静态再结晶激活能为221 036 J/mol,晶粒尺寸模型试验值与计算值的相关系数R2=0.99,该模型预测值准确率较高.
Abstract
A single pass compression test was carried out on 10B21 cold heading steel by using Gleeble-1500 thermal simulator.The effects of deformation temperature(950,1000 ℃),deformation rate(0.1,1,10 s-1),pre-strain(0.10,0.15,0.20),prior grain size and interval time on the static recrystallization behavior of the 10B21 cold heading steel were studied.The austenite grains under different deformation conditions were observed,and the kinetic model of static recrystallization and the grain size model of the 10B21 cold heading steel were established.The results show that the volume fraction of static recrystallization is positively correlated with the deformation temperature,deformation rate,pre-strain and interval time.The static recrystallization grain size is positively correlated with deformation temperature,prior grain size,and negatively correlated with deformation rate and pre-strain.The static recrystallization activation energy of the 10B21 cold heading steel is 221 036 J/mol.The correlation coefficient R2=0.99 between the experimental value and the calculated value of the grain size model indicates that the accuracy of the predicted value of the model is high.
关键词
10B21冷镦钢/静态再结晶/单道次热压缩试验/动力学模型/晶粒尺寸模型Key words
10B21 cold heading steel/static recrystallization/single pass hot compression test/kinetic model/grain size model引用本文复制引用
基金项目
国家自然科学基金联合基金(U20A20272)
河北省军民科技协同创新专项(22351001D)
河北省高等学校科学技术研究项目(CXY2023004)
出版年
2024
NETL
NSTL
万方数据