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

作　　者：薛雲泽 徐东[1] 郑冰 史胡生 杨风国 郑磊 Xue Yunze;Xu Dong;Zheng Bing;Shi Husheng;Yang Fengguo;Zheng Lei(Technology Innovation Center for High Quality Cold Heading Steel of Hebei Province,Hebei University of Engineering,Handan Hebei 056038,China;Whole Processes of High Quality Fastener Application Technology Research Center of Universities in Hebei Province,Hebei Taihang Iron and Steel Group Co.,Ltd.,Handan Hebei 056305,China;School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan Liaoning 114051,China;Technology Innovation Center for Engineering Research Center for High Toughness Wind Tower Steel of Hebei Province,Hebei Puyang Iron and Steel Co.,Ltd.,Handan Hebei 056305,China)

机构地区：[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 [2]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 [3]辽宁科技大学材料与冶金学院,辽宁鞍山114051 [4]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

出　　处：《金属热处理》2024年第6期217-223,共7页Heat Treatment of Metals

基　　金：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)。

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221036 J/mol,晶粒尺寸模型试验值与计算值的相关系数R^(2)=0.99,该模型预测值准确率较高。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 221036 J/mol.The correlation coefficient R^(2)=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 

分 类 号：TG142.15[一般工业技术—材料科学与工程]