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
黄振光 1陈重毅 1麻永林 1董丽丽 2刘宝志3
作者信息
- 1. 内蒙古科技大学材料科学与工程学院,内蒙古包头 014010
- 2. 内蒙古科技大学材料科学与工程学院,内蒙古包头 014010;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
- 折叠
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.
Abstract
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 12mT,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Key words
oriented silicon steel/pulsed magnet field/heat treatment/cold rolled texture/shear band引用本文复制引用
基金项目
内蒙古科技大学基本科研业务费专项(2024RCTD012)
出版年
2024
NETL
NSTL
万方数据