双辊薄带连铸取向硅钢铸态组织及织构特征  

Microstructure and Texture of As Cast Strip Based on Twin-Roll Strip Continuous Casting

作　　者：鲁辉虎 刘海涛[2] 宋红宇[2] 刘振宇[2] 

机构地区：[1]运城职业技术学院机电工程系,山西运城044000 [2]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：《铸造》2015年第9期837-841,共5页Foundry

基　　金：国家自然科学基金项目(50734001;51004035;51374002);中央高校基本科研业务费专项(N120407009;N140705001);中国博士后基金项目(2014M560218)

摘　　要：采用薄带连铸技术制备了取向硅钢薄带,并研究了其铸态组织及织构特征。结果表明:铸态组织主要由铁素体基体及相变马氏体组成,沿厚度方向形成明显的织构梯度。过热度为30℃时晶粒细小,晶粒随机取向;过热度为50℃时晶粒为粗大柱状,织构向{001}<0vw>集中。Abstract： Grain-oriented silicon steel as-cast strips were made by using of twin-roll strip continuous casting. The microstructure and texture of as-cast strip were investigated. The results show that the microstructure of the as-cast strip consisted of ferrite matrix and martensite, and the heterogeneity of the texture and the microstructure demonstrated the obvious gradient through the thickness direction. In the case of superheat 30 ℃, grains oriented randomly. In the case of superheat 50℃, columnar dendritic was observed and the solidification texture of { 100} （0vw） fiber evolved strongly.

关 键 词：双辊薄带连铸 取向硅钢 铸带 组织 织构 

分 类 号：TG249.7[金属学及工艺—铸造]