摘要
以不同弯曲变形展平后的B35AV1900废旧硅钢为对象,利用X射线衍射仪、场发射扫描电镜、光学显微镜和磁性能测试仪等研究弯曲及退火温度对其组织和磁性能的影响。结果表明：对弯曲10°硅钢采用900℃恒温4 h处理后,Goss织构强度升高,α和η取向线密度略高,磁壁间距增大,磁畴显著细化,细化率达到37.1%;随着变形量的增加和保温时间的延长,大量180°畴和90°畴演变为＂岛屿畴＂;试样900℃高温退火后析出相显著粗化,粒子分布更加均匀;试样退火后,铁损减小,磁导率上升,磁性能明显提升,在900℃左右铁损最低为1.01 W·kg^-1。
The effect of bending and annealing temperature on microstructure and magnetic properties of wasted B35 AV1900 silicon steel flatted with different bending deformation was studied by means of X-ray diffractometer（XRD）, field emission scanning electron microscopy（SEM）,optical microscope（OM） and magnetic tester. The results show that the Goss texture intensity of the silicon steel after deforming for 10° and annealing at 900 ℃ for 4 h increases,the texture density of α and η orientation line slightly increases,magnetic wall spacing increases,magnetic domain refines and its refining rate reaches to 37. 1%. With the increasing of bending degree and holding time,a large number of 180° and 90° domains evolve into ‘island domains＇. After high temperature high temperature annealing at 900℃,the precipitated phase is significantly coarser and the distribution of the particles is more uniform. After annealing,the iron loss decreases and magnetic permeability increases,the magnetic properties can be significantly improved,the lowest loss is 1. 01 W·kg^-1 after annealing at about 900 ℃.
作者
宋守许
刘涛
杜晓东
王文哲
SONG Shou-xu;LIU Tao;DU Xiao-dong;WANG Wen-zhe(Institute of Mechanical Engineering, Hefei University of Technology, Hefei 230009, China;School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China)
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2018年第5期84-93,共10页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金(51575155)
关键词
废旧硅钢
弯曲变形
磁畴
析出相
织构
磁性能
wasted silicon steel
bending deformation
magnetic domain
precipitate
texture
magnetic property
