材料研究学报  2012, Vol. 26 Issue (2): 199-205

研究论文 本期目录 | 过刊浏览 |

低碳Q690qENH高强桥梁钢的动态再结晶行为

陈俊1,  唐帅1,   周砚磊1,   刘振宇1,  王国栋1, 杨颖2,  陈军平2

1.东北大学轧制技术及连轧自动化国家重点实验室 沈阳 110819 2.鞍钢股份有限公司 鞍山 114021

Dynamic Recrystallization Behaviors of Low Carbon Q690qENH High–strength Bridge Steels

CHEN Jun1,  TANG Shuai1,   ZHOU Yanlei1,   LIU Zhenyu1,   WANG Guodong1,   YANG Ying2,   CHEN Junping2

1.The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819 2.ANGANG Steel Company Limited, Anshan 114021

陈俊 唐帅 周砚磊 刘振宇 王国栋 杨颖 陈军平. 低碳Q690qENH高强桥梁钢的动态再结晶行为[J]. 材料研究学报, 2012, 26(2): 199-205.
. Dynamic Recrystallization Behaviors of Low Carbon Q690qENH High–strength Bridge Steels[J]. Chin J Mater Res, 2012, 26(2): 199-205.

摘要 参考文献 相关文章 Metrics 全文: PDF(1266 KB)   摘要: 对低碳Q690qENH高强桥梁钢进行压缩实验, 研究了动态再结晶行为。结果表明, 在低碳Q690qENH高强桥梁钢的轧制热变形过程中, 其软化以动态回复为主, 只在0.1 s-1和0.2 s-1低应变速率下才发生明显的动态再结晶。通过计算将应力因子α修正为0.0099 MPa-1, 得到了实验钢的动态再结晶激活能, 建立了动态再结晶动力学模型。采用P--M--K法确定了εc/εp约为0.72, 且峰值应变与Z/A满足幂函数关系, 建立了动态再结晶临界应变模型, 其计算值与热变形中的显微组织演变规律一致。研究了温度对动态再结晶过程中界面迁移速率的影响规律。 关键词 ： 金属材料,  动态再结晶,  热模拟,  激活能,  动力学,  临界应变,  显微组织     Abstract：The dynamic recrystallization behaviors of low carbon Q690qENH high–strength bridge steel were investigated by hot compression deformation using MMS–300 thermo–simulation machine. The results show the softening of low carbon Q690qENH high-strength bridge steel is mainly controlled by dynamic recovery during hot rolling deformation and the dynamic recrystallization occurs obviously at low strain rates of 0.1 s−1 and 0.2 s−1. The stress factor was modified as 0.0099 MPa−1, the dynamic recrystallization activation energies were gained, and the dynamic recrystallization kinetics model was established. The expression of εc=0.72εp was determined using P–M–K method. Correlations between peak strain and Z/A are power function, and dynamic recrystallization critical strain model was established calculation values of which are good agreement with evolution of microstructure during hot deformation. Effects of temperature on migration–rate of interface were also investigated during dynamic recrystallization. Key words： metallic materials    dynamic recrystallization    thermo-simulation    activation energies    kinetics    critical strain    microstructure 收稿日期: 2011-08-31      ZTFLH:  TG142   基金资助: 中央高校基本科研业务费专项基金N110607003、N100507002资助项目。 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 陈俊 44.8K 链接本文: https://www.cjmr.org/CN/      或      https://www.cjmr.org/CN/Y2012/V26/I2/199 1 WANG Lei, GAO Cairu, WANG Yanfeng, DU Linxiu, ZHAO Dewen, LIU Xianghua, Development of bridge steels in China, Materials for Mechanical Engineering, 32(5), 1(2008) (王  磊, 高彩茹, 王彦锋, 杜林秀, 赵德文, 刘相华, 我国桥梁钢的发展历程及展望, 机械工程材料,  32(5), 1(2008)) 2 WEI Jie, TANG Guangbo, LIU Zhengdong, Hot deformation and dynamic recrystallization models of C–Mn steel, Journal of Iron and Steel Research, 20(3), 31(2008) (魏 洁, 唐广波, 刘正东, 碳锰钢热变形行为及动态再结晶模型, 钢铁研究学报, 20(3), 31(2008)) 3 S.F.Medina, C.A.Hernandez, General expression of the Zener-Hollomon parameter as a function of the chemical composition of low alloy and microalloyed steels, Acta Materialia, 44(1), 137(1996) 4 MA Bo, PENG Yan, LIU Yunfei, JIA Bin, Dynamic recrystallization kinetics model of low-alloy steel Q345B, Transactions of Materials and Heat Treatment, 31(4), 141(2010) (马 博, 彭 艳, 刘云飞, 贾 斌, 低合金钢Q345B动态再结晶动力学模型, 材料热处理学报, 31(4), 141(2010)) 5 MA Liqiang, YUAN Xiangqian, LIU Zhenyu, ZHANG Pijun, JIAO Sihai, WU Di, WANG Guodong, Study on dynamic recrystallization of Nb-microalloyed steels, Journal of Iron and Steel Research, 18(9), 47(2006) (马立强, 袁向前, 刘振宇, 张丕军, 焦四海, 吴 迪, 王国栋, 铌微合金钢动态再结晶的规律, 钢铁研究学报, 18(9), 47(2006)) 6 CHEN Liqing, ZHAO Yang, XU Qiuxiang, LIU Xianghua, Dynamic recrystallization and precipitation behaviors of a kind of low carbon V-microalloyed steel, ActaMetallurgica Sinica, 46(10), 1215(2010) (陈礼清, 赵 阳, 徐香秋, 刘相华, 一种低碳钒微合金钢的动态再结晶与析出行为, 金属学报, 46(10), 1215(2010)) 7 A.I. 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