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

作　　者：潘恩宝 董中奇 张雪 尹素花 PAN Enbao;DONG Zhongqi;ZHANG Xue;YIN Suhua(Key Laboratory of Undercooling Preparation Technology and Science Department of Materials Engineering,Hebei College of Industry and Technology,Shijiazhuang 050091,China;Hebei Provincial Engineering Research Center for Undercooling Preparation of Metal Materials,Shijiazhuang 050091,China;Hebei Metal Material Fine Crystal Preparation Technology Innovation Center,Shijiazhuang 050091,China)

机构地区：[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

出　　处：《铸造技术》2024年第12期1169-1173,共5页Foundry Technology

基　　金：河北省高等学校科学技术研究(ZD2022101)。

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.

关 键 词：电弧熔炼 Fe-6.5%Si高硅钢 XRD SEM 

分 类 号：TG146.4[一般工业技术—材料科学与工程]