东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2010, Vol. 31 ›› Issue (3): 362-365.DOI: -

• 论著 • 上一篇    下一篇

控制冷却对C-Mn钢力学性能的影响

周晓光;刘振宇;吴迪;王国栋;   

  1. 东北大学轧制技术及连轧自动化国家重点实验室;
  • 收稿日期:2013-06-20 修回日期:2013-06-20 发布日期:2013-06-20
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    “十一五”国家科技支撑计划项目(2006BAE03A08);;

Effects of control cooling on mechanical properties of C-Mn steel

Zhou, Xiao-Guang (1); Liu, Zhen-Yu (1); Wu, Di (1); Wang, Guo-Dong (1)   

  1. (1) The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, China
  • Received:2013-06-20 Revised:2013-06-20 Published:2013-06-20
  • Contact: Zhou, X.-G.
  • About author:-
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摘要： 采用MMS-300热力模拟实验机研究了某C-Mn钢铁素体动态相变前冷却速度对相变前奥氏体晶粒尺寸、室温铁素体晶粒尺寸的影响规律,同时在实验轧机上对实验钢的传统工艺、低温控轧工艺、非低温控轧工艺+前段快冷工艺进行了试轧.结果表明:①随着相变前冷却速度的增加,奥氏体晶粒尺寸呈逐渐减小趋势;②随着相变前冷却速度的增加,室温铁素体晶粒尺寸呈细化趋势;③非低温控轧工艺+前段快冷工艺取得了与低温控轧工艺相当的力学性能,且具有相对较低的屈强比.

关键词: 控制冷却, 晶粒尺寸, 铁素体相变, 热轧, 力学性能

Abstract: The effects of cooling rate on both austenite grain size and ferrite grain size at room temperature before ferrite transformation were investigated on MMS-300 thermomechanical simulator with the specimens of a kind of C-Mn steel to which the trial rolling processes were done simultaneously on rolling mills with conventional low-temperature controlling and non-low temperature controlling plus forepart fast cooling technologies. Some results revealed that: (1) the austenite grain size decreases with the increasing cooling rate before ferrite transformation; (2)the ferrite grain size at room temperature becomes finer with the increasing cooling rate before ferrite transformation; (3)the excellent mechanical properties provided by the technology of non-low temperature controlling rolling plus forepart fast cooling are the same to that by the low-temperature rolling technology, but the former has lower yield/tensile ratio.

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