中间退火温度对两阶段轧制无取向硅钢织构的影响  

Influence of intermediate annealing temperature on texture of a non-oriented silicon steel produced by two-stage cold rolling

作　　者：宋子豪 郭艳辉 魏延新 付斌 Song Zihao;Guo Yanhui;Wei Yanxin;Fu Bin(School of Materials Science and Engineering,Shanghai University of Applied Sciences,Shanghai 201418,China)

机构地区：[1]上海应用技术大学材料科学与工程学院,上海201418

出　　处：《金属热处理》2025年第3期74-80,共7页Heat Treatment of Metals

摘　　要：某无取向硅钢生产工艺流程为一次冷轧→中间退火→二次冷轧→最终再结晶退火,研究了中间退火温度(400、650、800℃)对试验无取向硅钢制备过程织构的影响。结果表明,随中间退火温度的增加,中间退火后晶粒尺寸逐渐增大,导致第二阶段冷轧后板材的晶粒尺寸增加,进一步导致再结晶晶粒尺寸增加。中间退火板材整体织构强度降低,λ织构组分减少直至消失,但γ织构组分逐渐成为主导织构,650℃中间退火样品形成了强Goss织构组分,经第二阶段轧制后,保留了少量的Goss织构组分,形成了峰值位置在{111}<112>的γ织构。最终再结晶退火初期,η织构和λ织构取向的再结晶晶核在其剪切带处形核,随着退火时间的延长逐渐消耗基体长大,退火1 h后,最终再结晶退火样品中最强织构组分为Goss织构。Production process of a non-oriented silicon steel is primary cold rolling→intermediate annealing→secondary cold rolling→final recrystallization annealing.The effect of intermediate annealing temperatures(400,650,and 800℃)on the texture of the tested non-oriented silicon steel during the preparation process was investigated.The results show that with the increase of intermediate temperature,the grain size gradually increases,resulting in an increase in grain size of the cold-rolled sheet in the secondary stage,which further leads to an increase in the final recrystallized grain size.The texture intensity of the intermediate annealed specimen decreases,theλtexture components disappear,but theγtexture components gradually become the dominant texture.Strong Goss texture is formed in the specimen intermediate annealed at 650℃,and after the second stage rolling,a part of the Goss texture component is retained and theγtexture with the peak at{111}<112>is formed.In the initial stage of subsequent recrystallization annealing,bothηandλtexture oriented grains nucleate at their shear bands.With the extension of the annealing time,the deformed matrix is consumed.After annealing for 1 h,the recrystallization texture of the final recrystallized specimen usually exhibits strong Goss texture.

关 键 词：无取向硅钢 两阶段轧制 中间退火 织构 

分 类 号：TG161[金属学及工艺—热处理]