摘要
为研究稀土钇(Y)对冷轧高硅钢薄板磁性能的影响规律,以3种不同Y含量(无稀土,含0.012%Y,含0.030%Y)的6.5%Si高硅钢为研究对象,采用了热轧、温轧、冷轧及退火工艺制备出了0.2 mm厚高硅钢成品板.利用金相显微镜(OM)、扫描电镜(SEM)及电子背散射衍射(EBSD)技术分析了稀土Y对其组织、织构和磁性能的影响.研究结果表明,随着Y含量的增加,高硅钢冷轧板成品退火后平均晶粒尺寸逐渐降低,分别为194μm、125μm和84μm;对磁性能有利的{100}面织构不断减弱,η(<100>//RD)织构强度先增后减,而对磁性能不利的γ(<111>//ND)织构先减弱后增强.当Y的质量分数为0.012%时,尽管在50~1000Hz频率下的铁损值相比无稀土高硅钢略有增加,但磁感B50最高,达到了1.647T,归因于η织构的增强与γ织构的减弱.
In order to study the effect of rare earth yttrium(Y)on the magnetic properties of cold rolled high silicon steel sheets,6.5%Si high silicon steel sheets with three different Y contents(without rare earth,containing 0.012%Y and 0.030%Y)were taken as research objects,and hot rolling,warm rolling,cold rolling and annealing processes were adopted to prepare 0.2 mm thick high silicon steel sheets.The effects of rare earth Y on the structure,texture and magnetic properties of the high silicon steel sheets were analyzed by means of metallographic microscope(OM,optical microscope),scanning electron microscope(SEM)and electron backscatter diffraction(EBSD).The results showed that the average grain sizes of annealed sheets gradually decreased with the increase of Y content,which were 194μm,125μm and 84μm,respectively.And as the increase of Y content,the{100}texture was continuously weakened,and the overall intensity ofη(〈100〉//RD)texture increased first and then decreased,while the intensity of harmfulγ(〈111〉//ND)texture decreased first and then increased.When the mass fraction of Y content was 0.012%,although the core losses at the frequencies of 50~1000 Hz were slightly higher than that of the high silicon steel without Y,the magnetic induction of B50 was the highest(1.647 T)due to the enhancingηtexture and the weakeningγtexture.
作者
周情耀
秦镜
赵海斌
徐星星
ZHOU Qingyao;QIN Jing;ZHAO Haibin;XU Xingxing(Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,China)
出处
《电工钢》
2020年第3期9-13,共5页
ELECTRICAL STEEL
关键词
高硅钢
稀土
钇
织构
磁性能
high silicon steel
rare earth
yttrium
texture
magnetic property
作者简介
第一作者:周情耀(1995-),男,硕士在读,E-mail:1136051605@qq.com;通讯作者:秦镜(1986-),男,副教授,E-mall:qinjing301@hotmail.com
