J. Mater. Sci. Technol. ›› 2012, Vol. 28 ›› Issue (6): 552-557.

• Research Articles • 上一篇    下一篇

强磁场对高纯Fe-0.36wt%C合金魏氏组织转变的影响

Shoujing Wang1,Zhao Xiang1,肖娜1,Liang Zuo2   

  1. 1. 东北大学
    2.
  • 收稿日期:2011-03-28 修回日期:2011-08-09 出版日期:2012-06-28 发布日期:2012-07-02
  • 通讯作者: Zhao Xiang
  • 基金资助:

    国家自然科学基金;长江学者和创新团队发展计划项目;教育部高等学校学科创新引智计划项目

High Magnetic Field Influence on the WidmanstÄatten Transformation in High Purity Fe-0.36 wt% C Alloy

Shoujing Wang1,2), Xiang Zhao1), Na Xiao1), Liang Zuo1)   

  1. 1) Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110819, China
    2) Liaoning Shihua University, Fushun 113001, China
  • Received:2011-03-28 Revised:2011-08-09 Online:2012-06-28 Published:2012-07-02
  • Contact: Xiang Zhao
  • Supported by:

    the National Natural Science Foundation of China (Grant Nos. 50771026, 50971034 and 50911130365), the Program for Changjiang Scholars and Innovative Research Team in University (Grant No. IRT0713), and the Programme of Introducing Talents of Discipline to Universities (Grant
    No. B07015).

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摘要： 本文研究了不同磁场强度的强磁场对高纯Fe-0.36wt%C合金中先共析铁素体转变的影响。结果表明，所施加的强磁场显著阻碍了针状铁素体（即魏氏组织铁素体）的形成。磁场强度越强，铁素体晶粒沿着磁场方向拉长并沿着磁场方向排列的现象越明显，这归因于施加磁场产生的相变额外驱动力和退磁场的作用。这也可能与磁偶极子相互作用导致的先共析铁素体晶核沿磁场方向的择优取向长大有关。

Abstract: The influence of high magnetic field with different strength on the proeutectoid ferrite transformation in high purity Fe-0.36 wt% C during diffusional γ→α phase transformation was studied. It was found that the formation of acicular ferrite (i.e. Widmanstatten ferrite) was obviously suppressed by the applied high magnetic field. The stronger the magnetic field is, the more the ferrite grains elongating and aligning along the field direction will be. This is attributed to additional driving force for phase transformation and demagnetization effect introduced by the applied magnetic field. This is also considered to be related to the preferential growth of proeutectoid ferrite nuclei along field direction caused by magnetic dipolar interaction.

Key words: High magnetic field, Widmanstatten, Transformation, Fe-C alloy