表面机械研磨/异步轧制无取向硅钢薄带的渗硅行为 |
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引用本文: | 莫成刚,黄凯,刘刚,黄璞,左良.表面机械研磨/异步轧制无取向硅钢薄带的渗硅行为[J].沈阳黄金学院学报,2011(3):216-219. |
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作者姓名: | 莫成刚 黄凯 刘刚 黄璞 左良 |
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作者单位: | [1]东北大学研究院,沈阳110819 [2]武汉钢铁(集团)公司国家硅钢工程技术中心,武汉430080 |
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摘 要: | 对w(Si)=3%无取向硅钢进行表面机械研磨处理(SMAT)和异步轧制(CSR),获得表面纳米结构,再进行550~650℃、4 h固体粉末渗硅处理,用透射电镜(TEM)、扫描电镜(SEM)和X射线衍射仪(XRD)研究表层组织演变。结果表明:经过SMAT后,w(Si)=3%无取向硅钢表面形成了等轴状、取向呈随机分布的、晶粒尺寸为10 nm的纳米晶组织;异步轧制后,表面纳米晶组织保持不变;550~650℃、4 h渗硅处理后,SMAT+CSR样品表面形成化合物层,其厚度随着温度的升高由17μm增加到52μm;化合物层由Fe3Si和FeSi相组成.
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关 键 词: | 无取向硅钢 表面机械研磨处理 异步轧制 渗硅 |
Siliconizing behavior in non-grain oriented silicon steel after surface mechanical attrition treatment and cross shear rolling |
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Authors: | MO Cheng-gang HUANG Kai LIU Gang HUANG Pu ZUO Liang |
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Affiliation: | 1.Research Academy,Northeastern University,Shenyang 110819,China; 2.National Engineering Research Center for Sillicon Steel,Wuhan Iron & Steel(Group) Corp.,Wuhan 430080,China) |
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Abstract: | Nanostructured surface layer was fabricated on a 3%(mass fraction) non-grain oriented silicon steel by means of surface mechanical attrition treatment(SMAT) and cross-shear rolling(CSR),and then a solid powder siliconizing treatment was carried out for the SMAT+CSR sample at 550~650 ℃ for 4 h.The microstructural evolution was examined by using transmission electron microscopy(TEM),scanning electron microscopy(SEM) and X-ray diffraction(XRD).Experimental results show that: equiaxed nanocrystallines with random orientations and about 10 nm in size were produced after the SMAT,which remain unchanged after the CSR.After the siliconizing treatment at 550~650 ℃ for 4 h,a compound layer forms on the SMAT+CSR sample,the layer thickness increases from 17 to 52 μm with the increment of the siliconizing temperature.The compound layer consists of Fe3Si and FeSi phases. |
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Keywords: | non-grain oriented silicon steel surface mechanical attrition treatment cross-shear rolling siliconizing |
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