脉冲磁场脱碳退火对CGO钢冷轧后组织及织构的影响  

Effect of pulsed magnetic field decarburizing annealing on microstructure and texture of CGO steel after cold rolling

作　　者：黄振光 陈重毅 麻永林[1] 董丽丽 刘宝志 HUANG Zhenguang;CHEN Zhongyi;MA Yonglin;DONG Lili;LIU Baozhi(School of Materials Science and Engineering,Inner Mongolia University of Science and Technology,Baotou O14010,Nei Mongol,China;Technology Center,Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Nei Mongol,China;Baotou Weifeng Rare Earth Electromagnetic Materials Co.,Ltd.,Baotou 014010,Nei Mongol,China)

机构地区：[1]内蒙古科技大学材料科学与工程学院,内蒙古包头014010 [2]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010 [3]包头市威丰稀土电磁材料股份有限公司,内蒙古包头014010

出　　处：《钢铁研究学报》2024年第6期787-793,共7页Journal of Iron and Steel Research

基　　金：内蒙古科技大学基本科研业务费专项资金资助项目(2024RCTD012)。

摘　　要：为了更深入探究脉冲磁场退火工艺对取向硅钢组织及织构的影响,采用一次冷轧之后Si质量分数为3.1%的普通晶粒取向硅钢,用实验室自主研发的脉冲磁场管式退火炉,施加磁场强度为12 mT的脉冲磁场进行850℃脱碳退火,之后再进行压下率为57%的二次冷轧,利用金相显微镜与XRD对脱碳退火及二次冷轧后的组织及织构观察和分析。结果表明,CGO钢在脱碳退火过程中施加脉冲磁场的脱碳效率较未施加磁场明显加快。脱碳退火过程施加脉冲磁场的CGO钢在二次冷轧之后,试样中剪切带数量较未施加磁场的明显增多,且{111}<112>织构强度增强而{111}<110>织构强度显著减弱。这将有助于后续冷轧硅钢在高温退火时的二次再结晶,提升最终的磁性能。同时,为促进取向硅钢脉冲磁场退火工艺的工业化应用提供实验依据。In order to further explore the effect of pulsed magnetic field annealing process on the microstructure and texture of oriented silicon steel,using a common grain oriented silicon steel containing 3.1 wt.%Si which after the first cold rolling,and a pulsed magnetic field experimental tube annealing furnace independently developed by the laboratory was applied for decarburizing annealing at 850℃with a magnetic field intensity of 12 mT,followed by a secondary cold rolling with a reduction rate of 57%.Microstructure and texture of decarburizing annealing and the secondary cold rolling were observed and analyzed by metallographic microscope and XRD.The results show that the decarburization efficiency of CGO steel when pulsed magnetic field is applied is much faster than that when no magnetic field is applied.After double cold rolling,the number of shear bands in the samples of CGO steel with pulsed magnetic field applied in the process of decarburizing annealing is significantly higher than that without magnetic field applied.The texture intensity of(111)<112>increases,the texture intensity of(111)<110>is dramatically weakened.This will facilitate the secondary recrystallization of the GOSS texture of the subsequent cold-rolled silicon steel during high temperature annealing,and improve the final magnetic properties.At the same time,the experimental basis for promoting the industrial application of pulsed magnetic field annealing process for oriented silicon steel is provided.

关 键 词：取向硅钢 脉冲磁场 热处理 冷轧织构 剪切带 

分 类 号：TG142[一般工业技术—材料科学与工程]