二次冷轧压下率对含钒钛取向硅钢组织和织构的影响

发布时间：2018-01-21 19:41

本文关键词： 普通取向硅钢钒钛二次冷轧组织织构　出处：《材料导报》2015年04期 　论文类型：期刊论文

【摘要】：在实验室条件下模拟薄板坯连铸连轧工艺流程试制含钒钛普通取向硅钢,采用不同的二次冷轧压下率进行轧制并研究了其对组织和织构的影响。结果表明:当二次冷轧压下率为60%时,组织中与轧向呈约35°夹角的Ⅰ类宽切变带最为密集,这有利于在最终二次再结晶退火中获得位向准确的高斯晶粒。一次冷轧板以α线织构为主,当压下率增大时,α线织构组分取向密度逐渐减小,逐渐转变为α+γ混合纤维织构。二次冷轧板以γ纤维织构为主,随着压下率的增大,以{111}〈112〉位向为代表的γ纤维织构逐渐增大,压下率增大到60%时,{111}〈112〉取向密度达到4.135,之后继续增大压下率,{111}〈112〉强度提升有限。在实验条件下,最佳的一次冷轧压下率为72%,二次冷轧压下率为60%,最终成品可发生完善的二次再结晶,成品磁性能P17达到1.049 W/kg,B8达到1.950T。
[Abstract]:Common oriented silicon steel containing vanadium and titanium was produced by simulating thin slab continuous casting and rolling process under laboratory conditions. The effects of different secondary cold rolling rates on microstructure and texture were studied. The results show that the reduction rate of secondary cold rolling is 60. In the microstructure, the type I wide shear band with an angle of about 35 掳to the rolling direction is the most dense, which is conducive to obtaining accurate Gao Si grains in the final secondary recrystallization annealing. The primary cold-rolled plate is dominated by 伪 -line texture. When the reduction rate increases, the orientation density of 伪 -line texture component gradually decreases and changes into 伪纬 mixed fiber texture. The secondary cold-rolled sheet mainly consists of 纬 -fiber texture, which increases with the reduction rate. The 纬 -fiber texture represented by {111} < 112 > orientation increases gradually, and when the reduction rate increases to 60, the orientation density of {111} < 112 > reaches 4.135, and then increases the reduction rate. The strength of {111} < 112 > is limited. Under the experimental conditions, the optimum reduction rate of primary cold rolling is 722, the second cold rolling is 60, and the final product can be perfect secondary recrystallization. The magnetic properties of the product P17 are 1.049 W / kg B8 and 1.950 T.
【作者单位】：西安建筑科技大学冶金学院;钢铁研究总院连铸技术国家工程研究中心;
【基金】：国家自然科学基金委员会与上海宝山钢铁股份有限公司联合资助项目(50934009)
【分类号】：TG335;TG142.1
【正文快照】： 0引言取向硅钢是具有单一高斯织构特征的软磁合金,它在轧制方向具有优异的磁性能,是电力工业产品原材料的重要一环。冷轧是取向硅钢塑性成型的重要环节,通过交叉滑移,微观上使取向硅钢内部各个晶粒在形状改变的同时也发生复杂的转动,形成不均匀并层错重叠分布的复杂微观结构,

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