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Cu和La对电弧熔炼Fe-6.5%Si合金 凝固组织及磁性能的影响
Effects of Cu and La on the Solidification Structure and Magnetic Properties of Fe-6.5 wt.% Si Alloy Under Arc Melting
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- DOI:
- 作者:
- 潘恩宝1，董中奇2，张 雪3，尹素花1
PANEnbao1, DONG Zhongqi2, ZHANG Xue3, YIN Suhua1
- 作者单位:
- 1. 河北省金属材料深过冷制备技术与科学重点实验室，河北石家庄050091；2.河北省金属材料深过冷制备工程研究 中心，河北石家庄050091；3.河北省金属材料细晶制备技术创新中心，河北石家庄050091
1. Key Laboratory of Undercooling Preparation Technology and Science Department of Materials Engineering, Hebei College of Industry and Technology, Shijiazhuang 050091, China; 2. Hebei Provincial Engineering Research Center for Undercooling Preparation of Metal Materials, Shijiazhuang 050091, China; 3. Hebei Metal Material Fine Crystal Preparation Technology Innovation Center, Shijiazhuang 050091, China
- 关键词:
- 电弧熔炼；Fe-6.5%Si 高硅钢；XRD；SEM
arc melting; Fe-6.5 wt.% Si high silicon steel; XRD; SEM
- 摘要:
- 研究了微量Cu、La对Fe-6.5%Si(质量分数)高硅钢的凝固组织及磁性能的影响。 采用XRD和扫描电镜分 析了合金组织相组成和结构，采用高低温振动样品磁强计测定了磁性能。结果表明，添加Cu、La抑制剂的Fe-6.5%Si合 金铸锭显微组织大致分成了3层，从试样底部到顶部，析出相形貌依次为细晶、柱状晶、等轴晶。添加Cu、La抑制剂显著 细化了Fe-6.5%Si 合金显微组织，添加0.05%Cu 合金显微组织由粗大的柱状晶转变细长枝状晶粒，添加0.03%La后合 金晶粒均匀细化。添加Cu元素，合金饱和磁化强度不变，矫顽力增加；添加La元素，合金饱和磁化强度降低，矫顽力增加。The effects of the addition of Cu and La inhibitors on the solidification organization and phase formation behavior of Fe-6.5 wt.% Si high silicon steel were investigated. The phase composition and structure of the alloy were analysed via XRD and SEM. The magnetic performance was measured by high- and low-temperature vibration magnetometers. The results show that the microstructure of the Fe-6.5 wt.% Si alloy ingot inhibited by Cu and La can be roughly divided into 3 layers. From the bottom to the top, the phase morphology is fine crystals, columnar crystals and isoaxial crystals. The microstructure of the Fe-6.5 wt.%Si alloy is significantly refined by the addition of Cu and La inhibitors. The microstructure of the alloy with 0.05 wt.% added Cu changes from thick column crystals to slender branches, whereas that of the alloy with 0.03 wt.% added La is refined evenly. The saturation magnetization of the Cu-added alloy remains unchanged, and the coercivity increases; the addition of La results in a decrease in the saturation magnetization, whereas the coercivity increases.