温轧无取向Fe-3.1wt%Si钢的组织织构及磁性能  

Microstructure/Texture and Magnetic Properties of Warm Rolled Non-oriented Fe-3.1wt%Si Steel

作　　者：黄永哲 刘文鹏 辛亚会 徐海洁 许云波[1] HUANG Yongzhe;LIU Wenpeng;XIN Yahui;XU Haijie;XU Yunbo(State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,China;Iron and Steel Research Institutes of Ansteel Group Corporation,Anshan 114009,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 [2]鞍钢集团有限公司钢铁研究院,辽宁鞍山114009

出　　处：《热加工工艺》2021年第9期16-19,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(51674080,51974085);国家重点研发计划项目(2017YFB0304105,2017YFB0304400);山东省重点研发计划项目(2019TSLH0103)。

摘　　要：基于电工钢传统轧制技术,采用温轧工艺制备了无取向Fe-3.1wt%Si钢,并研究了温轧温度对全流程组织、织构及成品板磁性能的影响规律。结果表明,随轧制温度的升高,变形晶粒内部的剪切带密度先升高后降低,温轧板织构强度逐渐减弱。轧制温度为120、360℃时,冷轧板与温轧板具有锋锐的α织构和中等强度的γ织构与λ织构;轧制温度达到600℃时,温轧板中出现了较强的Goss织构。退火板平均晶粒尺寸随轧制温度的增大先增大后减小。冷轧及轧制温度为120、360℃的退火板中的γ织构强度相近,其中120℃温轧后的退火板具有最强的λ织构,360℃温轧后退火板中γ织构与λ织构强度均较低。磁性能在120℃温轧时达到最优,此时铁损B_(1.5/50)为2.18W/kg,磁感应强度B_(50)为1.70 T。Based on the traditional rolling technology of electrical steel, non-oriented Fe-3.1 wt%Si steel was prepared by warm rolling process. The effects of warm rolling temperature on the microstructure, texture and magnetic properties of the non-oriented Fe-3.1%Si steel were studied. The results show that with the increase of rolling temperature, the density of shear bands in the deformed grains first increases and then decreases, and the textural strength of warm rolling sheet is gradually weakened. The cold rolled and warm rolled sheets after 120℃ and 360℃ warm rolling have sharp α-fiber texture, and γ and λtextures with medium intensity. When the rolling temperature reaches 600℃, strong Goss texture appears in the warm rolling sheet. The average grain size of annealing sheets increases first and then decreases with the increase of rolling temperatures.For the cold rolling and 120 and 360℃ warm rolling sheets after annealing, the γ texture intensity is similar, among which the annealed sheet after warm rolling at 120℃ has the strongest λ texture, and the γ texture and the λ texture intensities in the annealed sheet after the warm rolling at 360℃ are lower. The magnetic properties are optimal at 120℃ warm rolling. Under this condition, the iron loss B_(1.5/50) is 2.18 W/kg and the magnetic induction intensity B_(50) is 1.70 T.

关 键 词：无取向电工钢 温轧 织构 磁性能 

分 类 号：TG335.1[金属学及工艺—金属压力加工] TG142.1[一般工业技术—材料科学与工程]