低温取向硅钢高温退火抑制剂的演化  

Evolution of inhibitor in the annealing process at high temperature of low temperature hot roll and nitriding grain-oriented silicon steel

作　　者：吴忠旺[1,2,3] 赵宇[2] 李军[2] 李波[1] 

机构地区：[1]钢铁研究总院,北京100081 [2]安泰科技股份有限公司功能材料事业部,北京100081 [3]内蒙古科技大学材料与冶金学院,内蒙古包头014010

出　　处：《材料热处理学报》2011年第11期84-87,共4页Transactions of Materials and Heat Treatment

摘　　要：取向硅钢利用析出物作为抑制剂,抑制初次再结晶晶粒的长大,抑制剂是取向硅钢发生二次再结晶的基本条件之一。文中通过低温板坯加热技术制备取向硅钢,采用透射电镜(TEM)观察并研究了高温退火阶段抑制剂的演化过程。结果表明,渗氮后形成的非晶态Si3N4析出物不稳定,在700～750℃退火升温阶段转化为(Al,Si)N;(Al,Si)N颗粒在800℃发生团聚,随后长大并粗化;(Al,Si)N是低温取向硅钢主要抑制剂,随退火温度的升高,(Al,Si)N抑制力大幅下降。Precipitates as inhibitor are used to inhibit the grain growth of primary recrystallization in grain-oriented silicon steel,and inhibitor is one of the basic conditions for occurring of secondary recrystallization.The grain-oriented silicon steel was produced by low temperature slab heating and nitriding technique.The evolution of inhibitor was observed by transmission electron microscopy.The results show that Si3N4 particles are precipitated after nitriding,and Si3N4 particles are amorphous and unstable.Si3N4 particles transform into（Al,Si）N particles at temperature of 700-750 ℃ during heating stage of the high temperature annealing.The（Al,Si）N particles agglomerate at temperature of 800 ℃,and then grow and coarsen.The（Al,Si）N particles are the main inhibitor of the grain-oriented silicon steel,and the inhibition of（Al,Si）N particles significantly decreases with the temperature increasing.

关 键 词：硅钢 析出物 渗氮 (Al Si)N 

分 类 号：TG142.77[一般工业技术—材料科学与工程]