温轧温度对6.5%Si高硅钢再结晶过程中组织及织构演变的影响  

Effect of Warm Rolling Temperature on Microstructure and Texture Evolution during Recrystallization of 6.5%Si High Silicon Steel

作　　者：文秋月 朱家晨 刘静[1,2] 马素媛 戴方钦 程朝阳[1] WEN Qiuyue;ZHU Jiachen;LIU Jing;MA Suyuan;DAI Fangqin;CHENG Zhaoyang(State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China;College of Material Science and Engineering,Shenzhen University,Shenzhen 518071,China;College of Automotive and Materials Engineering,Wuhan Engineering Institute,Wuhan 430415,China)

机构地区：[1]武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北武汉430081 [2]深圳大学材料学院,广东深圳518071 [3]武汉工程职业技术学院汽车与材料工程学院,湖北武汉430415

出　　处：《热加工工艺》2024年第21期51-56,共6页Hot Working Technology

基　　金：国家自然科学基金资助项目(52274393,52074200,51804231);湖北省重大科技专项项目(2023BAB141);湖北省自然科学基金资助项目(2022CFB091)。

摘　　要：在不同温轧温度下制备了6.5%Si高硅钢薄板,然后进行900℃保温不同时间的再结晶退火。通过OM、EBSD研究了温轧温度对6.5%Si高硅钢薄板再结晶过程中组织、织构的演变规律及其磁性能的影响。结果表明:当温轧温度较低时,再结晶退火后晶粒尺寸更小且组织均匀较差。低温轧制有利于形成高密度的晶内剪切带,而这些剪切带将促进再结晶晶粒的形核和长大,最终再结晶退火板中具有较高强度的η织构而提高磁感应强度,但此时晶粒尺寸相对较小且组织均匀性较差,使得铁损更高。6.5%Si high silicon steel sheets were prepared under different warm rolling temperatures,then recrystallization annealing at 900 C for various times were carried out.The effect of warm rolling temperature on the evolution of microstructure and texture during the recrystallization process and the magnetic performance was studied by using optical microscopy and electron backscatter diffraction.The results show that when the rolling temperature is low,the grain size after recrystallization annealing is smaller and the microstructure uniformity is poorer.Low temperature rolling promotes the formation of high-density intragranular shear bands,which promotes the nucleation and growth of recrystallized grains.Consequently,the recrystallized annealed sheet has higher strength of m fiber texture,thereby,the magnetic induction intensity is improved.However,the grain size is relatively smaller and the microstructure uniformity is poorer,resulting in higher iron loss.

关 键 词：6.5%Si高硅钢 温轧温度 织构 磁性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程]