中温含铜取向硅钢二次冷轧过程中的织构演变  

Texture evolution of medium temperature copper-bearing oriented silicon steel during secondary cold rolling

作　　者：张驰 滑小杰 白璐 舒泽腾 姚昕宇 叶芹 董香芸 ZHANG Chi;HUA Xiaojie;BAI Lu;SHU Zeteng;YAO Xinyu;YE Qin;DONG Xiangyun(Wuxi Putian Iron Core Company Limited,Wuxi 214195,China)

机构地区：[1]无锡普天铁心股份有限公司,江苏无锡214195

出　　处：《电工钢》2024年第3期9-15,共7页ELECTRICAL STEEL

摘　　要：利用电子背散射技术对中温含铜取向硅钢脱碳退火及二次冷轧过程织构进行了定量分析,研究了二次冷轧不同道次过程中织构与塑性变形程度的演变规律。结果表明,{111}〈112〉、{111}〈110〉、{112}〈110〉织构为脱碳退火和二次冷轧过程中的主要织构组分;在表层和亚表层中,{111}〈112〉织构和{111}〈110〉织构的体积分数随冷轧道次的增加而增加,{112}〈110〉织构的体积分数随冷轧道次的增加先增大后减少。与其他位置不同的是,中心层中{112}〈110〉织构占据最高的体积分数,当累积变形量大于58%时,向{111}〈110〉织构转化。对于{001}〈110〉织构,都是在第一道次冷轧后增加,随后随冷轧道次增加趋于稳定,但中心层的织构体积分数高于其他位置。随二次冷轧道次增加,几何位错密度增加,塑性变形程度增加,表层和亚表层的几何位错密度值比中心层高。The textures of medium temperature reheated grain oriented silicon steel containing copper during decarburization annealing and secondary cold rolling were quantitatively analyzed by EBSD technique,and the evolution of textures and plastic deformation during different passes of secondary cold rolling was studied.The results showed that{111}〈112〉texture,{111}〈110〉texture and{112}〈110〉texture are the main texture components in decarburization annealing and secondary cold rolling.In the surface and subsurface layer,the volume fraction of{111}〈112〉texture and{111}〈110〉texture increases with the increase of cold rolling passes,while the volume fraction of{112}〈110〉texture increases at first and then decreases with the increase of cold rolling passes.Different from other positions,the{112}〈110〉texture occupies the highest volume fraction in the central layer,and when the cumulative deformation is higher than 58%,it transforms to the{111}〈110〉texture.The{001}〈110〉texture increases after the first cold rolling,and then tends to be stable with the increase of cold rolling pass,but the texture volume fraction of the central layer is higher than that of other positions.With the increase of secondary cold rolling passes,the geometric dislocation density increases,the degree of plastic deformation increases,and the geometric dislocation density of the surface layer and the subsurface layer is higher than that of the central layer.

关 键 词：取向硅钢 织构 脱碳退火 冷轧 

分 类 号：TG142.77[一般工业技术—材料科学与工程]