热轧卷取温度对低硅无取向硅钢组织、织构及磁性能的影响  

Effects of hot-rolled coiled temperature on microstructure,texture and magnetic properties of low silicon non-oriented electrical steels

作　　者：安灵子 刘海涛[1] 王国栋[1] AN Lingzi;LIU Haitao;WANG Guodong(The state key laboratory of rolling automation,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110819

出　　处：《电工钢》2021年第1期15-21,共7页ELECTRICAL STEEL

基　　金：国家重点研究发展计划(2016YFB0300305);国家自然科学基金(51574078,51774081,51804073);中国博士后科学基金(2016T90228,2018M630296);辽宁省“兴辽英才计划”项目(XLYC1907056)。

摘　　要：基于常规流程制备无取向硅钢,研究了卷取温度对于0.9%Si无取向硅钢组织、织构和磁性能的影响。研究表明,650℃卷取后组织仍为细小的变形组织,最终退火板晶粒尺寸较小且不均匀。700℃和750℃卷取后,组织为尺寸较大且均匀的再结晶组织,最终退火板组织也较为均匀。卷取后退火板不利的γ-fiber织构明显减弱,有利的λ-fiber织构增强。随着卷取温度的升高,磁感显著提升,与未卷取时相比,750℃卷取后退火板平均磁感B 50提高了0.013 T。The effects of hot-rolled coiled temperature on microstructure,texture and magnetic properties of 0.9%Si non-oriented electrical steels were investigated based on conventional process.The study found that the coiled microstructure at 650℃was mainly characterized by fine deformed grains,causing the fine and heterogeneous recrystallized annealed grains.Nevertheless,coarse and homogeneous coiled microstructures were obtained at 700℃and 750℃,resulting in homogeneous microstructure in final annealed sheets.After coiling,theγ-fiber texture significantly weakened andλ-fiber texture increased in the final annealed sheets.The magnetic induction significantly improved with the coiling temperature increasing.Compared to that without coiling,the average magnetic induction(B 50)increased by 0.013 T when coiling at 750℃.It indicated that the coiling temperature was one of the key factors that affect the magnetic properties.

关 键 词：无取向硅钢 组织 织构 磁性能 

分 类 号：TG335.5[金属学及工艺—金属压力加工] TG142.77[一般工业技术—材料科学与工程]