连续退火工艺对稀土50W470无取向硅钢组织、织构及磁性能的影响  

Influence of continuous annealing process on microstructure,texture and magnetic properties of Rare-Earth 50W470 non-oriented silicon steel

作　　者：李宗维 李涛[1] 韩强[1] 张年迪 孙昭琦 白岩松 LI Zongwei;LI Tao;HAN Qiang;ZHANG Niandi;SUN Zhaoqi;BAI Yansong(Materials and Metallurgy School,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2023年第4期327-331,共5页Journal of Inner Mongolia University of Science and Technology

基　　金：国家自然科学基金资助项目(51761033).

摘　　要：采用蔡司金相显微镜、X射线衍射仪、硅钢片磁性能测量仪等对稀土50W470无取向硅钢的组织、织构及磁性能进行了测定.结果表明:稀土50W470无取向硅钢在870,890℃分别以60,70,80 m/min连续退火后的显微组织均为再结晶组织,随着退火温度的升高或退火速率的降低,晶粒平均尺寸逐渐变大;退火后,退火织构为Goss织构、{111}<112>织构和{001}<100>织构;890℃退火条件下,随着退火速率的升高,织构因子在退火速率为70 m/min时值最小;根据稀土50W470无取向硅钢磁感应强度与铁损的最佳匹配,实验室条件下最佳退火工艺为退火温度890℃,退火速率60 m/min.The microstructure,texture and magnetic properties of Rare Earth 50W470 non-oriented silicon steel were measured by ZEISS metallographic microscope,X-ray diffractometer,silicon steel sheet magnetic property measuring instrument,etc.The results show that the microstructure of Rare Earth 50W470 non oriented silicon steel is recrystallized after continuous annealing at 870,890℃ at different annealing speed of 60,70 and 80 m/min,respectively.The average grain size gradually increases with the increase of annealing temperature or the decrease of annealing speed.After annealing,the annealed texture is Goss texture,{111}<112>texture and{001}<100>texture.Under the annealing condition of 890℃,with the increase of annealing speed,the values of texture factor are the smallest when the annealing speed was 70 m/min.To achieve the best match between the magnetic induction strength and iron loss of Rare Earth 50W470 non-oriented silicon steel,the best annealing process under laboratory conditions is annealing temperature of 890℃ and annealing speed of 60 m/min.

关 键 词：稀土50W470无取向硅钢 连续退火 织构 磁性能 

分 类 号：TG156.2[金属学及工艺—热处理]