郭善莉1，胡波2，包喜荣3

( 1．包头钢铁( 集团) 公司轨梁厂热轧部，内蒙古包头014010; 2．包头钢铁( 集团) 公司线材厂生产管理部，内蒙古包头014010; 3．内蒙古科技大学材料与冶金学院，内蒙古包头014010)

关键词: 重轨钢; 动态再结晶; 数学模型

中图分类号: TG142． 1 + 3 文献标识码: A

摘要: 以稀土轨RE-Ⅱ为研究对象，在Gleeble － 1500D 热模拟实验机上进行单道次高温压缩变形实验，研究实验钢的动态再结晶行为及其影响因素，采用线性回归法计算动态再结晶激活能Q 并回归其温度补偿应变速率因子Z的数学模型，为预报和控制RE-Ⅱ稀土轨的组织及性能提供基本实验依据.

Research on mathematical model of dynamic recrystallization of RE-Ⅱheavy rail

GUO Shan-li1，HU Bo2，BAO Xi-rong3

( 1． Rail Beam Plant，Baotou Iron and Steel ( Group) Co．，Baotou 014010，China ; 2． Wire Plant，Baotou Iron and Steel ( Group)

Co．，Baotou 014010，China; 3． Materials and Metallurgy School，Inner Mongolia University of Science and Technology，Baotou 014010，China)

Key words: heavy rail; dynamic recrystallization; mathematical model

Abstract: The influencing factors on dynamic recrystallization of RE-Ⅱheavy rail are studied by one-pass high temperature compression tests using Gleeble-1500D thermal-mechanical simulator． The activation energy Q is calculated and the model of dynamic recrystallization Z is obtained in order to provide basic data for the prediction and control of the microstructure and properties of RE-Ⅱheavy rail products．