抑制剂对Hi-B钢初次再结晶组织的影响

Influence of inhibitors on primary recrystallization structure of Hi-B electrical steel

模拟CSP工艺分别试制2种不同成分（试样A和试样B）的Hi-B钢,对比研究其初次再结晶退火（830℃×5min）后组织、织构及抑制剂等相关内容。利用Zeiss Axioplan光学显微镜观察试样金相组织,NOVA400Nano型场发射扫描电子显微镜（SEM）进行微观织构电子背散射衍射（EBSD）的数据采集,JEM-2100透射电子显微镜（TEM）观察析出物的形貌、大小及分布情况,同时借助选区电子衍射（SAED）及能谱仪（EDS）分析抑制剂。结果表明：试样A平均晶粒尺寸比试样B小;试样A析出物主要为Cu_2S和AlN,试样B则为MnS和AlN;试样A中Goss织构及{111}〈112〉等有利织构含量与试样B相比较多且分布更均匀,{110}〈112〉等不利织构含量则相对较少,且Σ3、Σ5、Σ9等有利晶界较多。

The influence of different inhibitors on textures after primary recrystallization（830℃,5 min）of Hi-B steel manufactured by stimulating CSP process was studied by Zeiss Axioplan optical microscope（OM）,NOVA400 Nano field emission scanning electron microscope（SEM）,electron back-scattered diffraction（EBSD）,JEM-2100 transmission electron microscope（TEM）and energy dispersive spectrometry（EDS）which specimen was made by the second extraction replica method.The results show that the average grain size of sample A is smaller than that of sample B.The inhibitors of sample A and B are mainly Cu_2S and AlN,MnS and AlN.Contents of favorable Goss and{110}〈112〉texture of sample A are relatively more than that of sample B.The contents of unfavorable texture such as {110}〈112〉texture are relatively small.MoreΣ3,Σ5 andΣ9 CSL grain boundaries occur in the sample A.