含Nb低温取向硅钢热轧板织构及析出物分析

发布时间：2018-01-16 03:34

本文关键词：含Nb低温取向硅钢热轧板织构及析出物分析　出处：《钢铁研究学报》2017年10期 　论文类型：期刊论文

【摘要】：分别采用电子背散射衍射技术(EBSD)、JEM-2100型透射电镜(TEM)研究了Nb元素对取向硅钢热轧板织构和析出物的影响。结果表明:取向硅钢添加Nb元素以后,热轧板中晶粒尺寸相对细小、Goss织构({110}001)含量更高、位向更精准,而且出现了传统取向硅钢热轧板中很难形成的γ取向线织构({111}112和{111}110);透射电镜分析结果显示含Nb实验钢中析出相尺寸更细小而均匀,析出相除了MnS、AlN,还有NbCN,析出相含量增多,同时Nb的加入对细化其他析出物有积极的作用;含Nb取向硅钢中析出相的尺寸越小和体积分数越大,则析出相的抑制力也就越大,从而为形成的γ取向线织构和更高含量的Goss织构提供了有利的条件。
[Abstract]:Electron backscattering diffraction (EBSD) technique was used respectively. The effect of NB element on texture and precipitate of oriented silicon steel hot rolled plate was studied by JEM-2100 transmission electron microscope. The results showed that NB element was added to oriented silicon steel. The grain size of hot rolled plate is relatively fine and the content of Goss texture ({110} 001) is higher and the orientation is more accurate. Moreover, the 纬 -orientation texture ({111} 112 and {111} 110), which is difficult to form in the traditional oriented silicon steel hot rolled sheet, appears. The results of TEM analysis show that the size of precipitated phase is smaller and more uniform in Nb-containing experimental steel, and the precipitated phase, in addition to MnSfAlN, NbCNand the content of precipitated phase increases. At the same time, the addition of NB plays a positive role in refining other precipitates. The smaller the size and the larger the volume fraction of the precipitated phase in Nb-oriented silicon steel, the greater the inhibition force of the precipitated phase, which provides favorable conditions for the formation of 纬 -orientation line texture and higher content of Goss texture.
【作者单位】：武汉科技大学省部共建耐火材料与冶金国家重点实验室;
【基金】：国家自然科学基金资助项目(51674180)
【分类号】：TG335
【正文快照】： 取向硅钢作为变压器铁芯的主要材料,一直以来追求的主要目标之一就是提高成品的磁性能,包括磁感应强度的提高和铁损降低[1-3]。磁感应强度的提高依赖于Goss织构({110}001)的锋锐程度,成品中Goss织构越锋锐,磁感应强度越大。为了使取向硅钢成品中Goss织构更锋锐,就需要高效的

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