东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2005, Vol. 26 ›› Issue (1): 263-266.DOI: -

• 论著 • 上一篇    下一篇

热变形过程中γ→α相变开始温度的预测——C-Mn钢与Nb-v微合金钢

许云波;于永梅;刘相华;王国栋   

  1. 东北大学轧制技术及边轧自动化国家重点实验室;东北大学轧制技术及边轧自动化国家重点实验室;东北大学轧制技术及边轧自动化国家重点实验室;东北大学轧制技术及边轧自动化国家重点实验室 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2005-01-15 发布日期:2013-06-24
  • 通讯作者: Xu, Y.-B.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2001AA339030);;

Predicting the onset of austenite-ferrite transformation during hot deformation of low carbon and Nb-V microalloyed steels

Xu, Yun-Bo (1); Yu, Yong-Mei (1); Liu, Xiang-Hua (1); Wang, Guo-Dong (1)   

  1. (1) Lab. of Rolling and Automat., Northeastern Univ., Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2005-01-15 Published:2013-06-24
  • Contact: Xu, Y.-B.
  • About author:-
  • Supported by:
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摘要： 以Cahn理论和Scheil法则为基础,讨论了热变形过程对γ α相变的影响,预测了C Mn钢变形过程铁素体析出的开始温度Ar3d和Nb V钢连续冷却转变开始温度Ar3·结果表明,同样变形条件下,碳含量或锰含量越低的钢种Ar3d越高;同一成分钢种,随着变形量增大或变形速率降低Ar3d提高;随着冷却速率的增加,Ar3温度降低;变形可以提高Ar3温度·用该方法进行的计算机模拟结果和实验结果吻合良好,表明这种理论处理方法可用来模拟这种相变过程·

关键词: α相变, 相变动力学, 孕育期, 形变诱导相变, 连续冷却转变

Abstract: The influence of hot deformation process on austenite-ferrite transformation was investigated to predict the starting temperature of ferrite precipitation of low carbon steels during deformation (Ar3d) and the starting transition temperature of Nb-V microalloyed steels during continuous cooling (Ar3). The results indicate that the lower the C or Mn content, the higher the Ar3d temperature under the same deformation conditions, and Ar3d increases with the increase of strain amount or the decrease of strain rate for the same steel grade. On the other hand, Ar3 decreases with the increase of cooling rate and increases due to deformation. The simulated results were found in agreement with experimental ones, which implied that such a theoretical approach can be used to model the transformation process above mentioned.

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