锡对取向硅钢中抑制剂析出行为及显微组织的影响  

Influence of Sn on Precipitation Behavior of Inhibitors and Microstructure of Grain-oriented Silicon Steel

作　　者：周博文[1,2] 李光强[1,2] 朱诚意[1,2] 付勇[1,2] 

机构地区：[1]武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北武汉430081 [2]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081

出　　处：《热加工工艺》2016年第4期19-23,共5页Hot Working Technology

基　　金：国家自然科学基金项目(51104109);中国博士后科学基金第54批面上资助项目(2013M540609)

摘　　要：采用透射电镜、扫描电镜和金相显微镜研究了Sn对高磁感取向硅钢夹杂物析出行为与热轧及常化退火组织的影响。结果表明,取向硅钢铸坯与热轧板中的抑制剂主要以Mn S和Al N的复合形式存在。与未添加Sn相比,添加Sn后,铸坯与热轧板中的析出物尺寸更小且分布更弥散,从而有效避免了热轧板中间区域出现强烈形变组织,且常化退火板边缘晶粒尺寸更大、中心区域晶粒尺寸更小且分布的更均匀。The influences of Sn on the precipitation behaviors of precipitates, hot rolled and normalizing annealing mierostructure of grain-oriented silicon steels were studied by TEM, SEM and metallographic microscope. The results show that the main inhibitors in cast and hot rolled plate of grain-oriented silicon steel are complex precipitates of MnS and AIN. Compared with the samples with no Sn addition, the size and distribution of precipitates in cast and hot-rolled plate after adding Sn are smaller and more dispersive, which can restrain the formation of strong deformed microstructure in the center of hot rolled plate, and the steel with Sn after normalizing annealing treatment has bigger grains in the edge and smaller grains in the center, and the grain distributes more uniformly.

关 键 词：取向硅钢 SN 析出物 抑制剂 热轧组织 常化退火组织 

分 类 号：TG132.2[一般工业技术—材料科学与工程]