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首页> 外文期刊>Journal of magnetism and magnetic materials >The impact of niobium on the microstructure, texture and magnetic properties of strip-cast grain oriented silicon steel
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The impact of niobium on the microstructure, texture and magnetic properties of strip-cast grain oriented silicon steel

机译：铌对带取向晶粒硅钢组织，织构和磁性能的影响

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摘要

We elucidate here the impact of niobium in ultra-low carbon grain oriented electrical steel (GOES) in terms of microstructure, texture, precipitation and magnetic properties that was processed by twin roll strip casting. Coarse and complex MnS + NbN precipitates, and fine NbN were nucleated at the grain boundaries and in the interior of the grain in the as-cast strip, which contributed to a small degree of grain refinement together with relatively random texture, and AlN precipitation was suppressed during the strip casting process. NbN continuously precipitated during the entire process and exhibited high stability during the reheating cycle, which provided stronger inhibiting force in comparison to AlN precipitates. As a consequence, fine and homogeneous inhibitors were obtained in the primary annealed sheet in the presence of Nb under cold rolling and annealing parameters used in the present study. On considering the effect of NbN particles or Nb in solution on the deformation and recrystallization behavior, the primary annealed Nb-containing sheet exhibited significantly more homogeneous microstructure in relation to Nb-free GOES, with grain size in the range of ∼8-12 μm, and was characterized by relatively more pronounced γ-fiber and weak Goss texture, beneficial for the abnormal growth of Goss grains. Furthermore, Nb-containing GOES experienced complete abnormal growth during secondary recrystallization annealing, such that the enhanced magnetic induction (B_8 as high as 1.88 T) was obtained. In summary, the present study underscores that NbN can be used as an effective inhibitor in ultra-low carbon grain oriented electrical steel using strip casting technology.
机译：在此，我们从双辊带钢铸造工艺的微观结构，织构，析出和磁性能方面，阐明了铌在超低碳晶粒取向电工钢（GOES）中的影响。铸态带中粗大且复杂的MnS + NbN析出物和细NbN在晶界和晶粒内部成核，这导致晶粒细化程度较小，且织构相对随机，AlN析出为在带钢铸造过程中被压制。 NbN在整个过程中连续析出，并在再加热周期中表现出高稳定性，与AlN析出物相比，它提供了更强的抑制力。结果，在本研究中使用的冷轧和退火参数下，在Nb存在的情况下，在初次退火的板材中获得了细而均质的抑制剂。考虑到溶液中NbN颗粒或Nb对形变和再结晶行为的影响，与不含Nb的GOES相比，初次退火的含Nb板表现出明显更均匀的微观结构，晶粒尺寸在〜8-12μm范围内，其特征在于相对较明显的γ纤维和弱的高斯质地，有利于高斯晶粒的异常生长。此外，含Nb的GOES在二次重结晶退火过程中经历了完全异常的生长，因此获得了增强的磁感应强度（B_8高达1.88 T）。总而言之，本研究强调了NbN可以通过带钢铸造技术用作超低碳晶粒取向电工钢的有效抑制剂。

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    Fang Feng; Lan M. F.; Lu Xiang; Zhang Yuanxiang; Wang Yanli; Yuan Guo; Cao Guangming; Xu Yunbo; Misra Raja Devesh Kumar; Wang Guodong;

  • 作者单位

    State Key Laboratory of Rolling Technology and Automation, Northeastern University, Shenyang, China;

    State Key Laboratory of Rolling Technology and Automation, Northeastern University, Shenyang, China;

    State Key Laboratory of Rolling Technology and Automation, Northeastern University, Shenyang, China;

    State Key Laboratory of Rolling Technology and Automation, Northeastern University, Shenyang, China;

    State Key Laboratory of Rolling Technology and Automation, Northeastern University, Shenyang, China;

    State Key Laboratory of Rolling Technology and Automation, Northeastern University, Shenyang, China;

    State Key Laboratory of Rolling Technology and Automation, Northeastern University, Shenyang, China;

    State Key Laboratory of Rolling Technology and Automation, Northeastern University, Shenyang, China;

    Laboratory for Excellence in Advanced Steel Research, Department of Metallurgical, Materials and Biomedical Engineering, University of Texas at El Paso, EL Paso, TX, United States;

    State Key Laboratory of Rolling Technology and Automation, Northeastern University, Shenyang, China;

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  • 关键词

    Grain oriented silicon steel; Microstructure; Nb addition; Precipitation; Strip casting;

    机译：晶粒取向硅钢;微观结构铌添加;沉淀;带钢铸造;

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