卷取温度对0.4%Si硅钢组织、织构及磁性能的影响  

Effect of coiling temperature after hot rolling on the microstructure,texture and magnetic properties of 0.4%Si silicon steel

作　　者：安珍珍 陈冬梅 魏庆庆 刘海涛[1] AN Zhenzhen;CHEN Dongmei;WEI Qingqing;LIU Haitao(The State Key Laboratory of Rolling and 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》2020年第5期20-25,共6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和51804073);中国博士后科学基金(2016T90228和2018M630296);辽宁省“兴辽英才计划”项目(XLYC1907056)。

摘　　要：在实验室条件下探索了0.4%Si无取向硅钢热轧后卷取温度对硅钢组织、织构演变及磁性能的影响。结果表明,卷取温度从630℃提高到700℃,有利于热轧卷取板再结晶晶粒形核和长大,使得冷轧前组织粗化,退火板的平均晶粒尺寸从26.1μm增加到41.5μm,铁损从5.634 W/kg降到4.825 W/kg。卷取温度为630℃时,退火板中不利的{111}取向晶粒体积分数为31.6%,有利的{001}和Goss取向晶粒体积分数为4.6%;卷取温度为700℃时,其退火板中{111}取向晶粒体积分数降低至21.2%,{001}和Goss取向晶粒体积分数增加到5.9%。提高卷取温度,有利织构增强,不利织构显著减弱,从而使磁感从1.754 T提高到1.774 T。The effect of coiling temperature after hot rolling on the microstructure,texture evolution and magnetic properties of 0.4%Si non-oriented silicon steel was investigated under laboratory conditions.The results showed that the increase of the coiling temperature from 630℃to 700℃was conductive to the nucleation and growth of the hot rolled coiled sheet,leading to coarse the microstructure of the steel before cold rolling.The mean grain size of the annealed plate was increased from 26.1μm to 41.5μm,and the iron loss was decreased from 5.634 W/kg to 4.825 W/kg.In the case of the coiling temperature at 630℃,the volume fraction of unfavorable{111}oriented grains in annealed plates was 31.6%,and the favorable{001}and Goss oriented grains was 4.6%.By contrast,in the case of the coiling temperature at 700℃,the volume fraction of{111}oriented grains was decreased to 21.2%,and{001}and Goss oriented grains was increased to 5.9%.With the increase of the coiling temperature,the favorable textures were enhanced while the unfavorable textures were significantly weakened,thus increasing the magnetic induction from 1.754 T to 1.774 T.

关 键 词：无取向硅钢 织构 卷取温度 磁性能 

分 类 号：TG113[金属学及工艺—物理冶金] TG42.77[金属学及工艺—金属学]