In this paper,the microstructure and macrotexture of Hi-B steel at various stages of production are ana-lyzed with such detection means as Zeiss microscope and X-ray diffractometer. The results showed that the microstructure of Hi-B steel was ferrite at all production stages. The microstructure is completely recrystallized after decarbonizing and nitriding annealing and average grain size is 28. 92μm as well as secondary recrystallization is completed after high temper-ature annealing and average grain size of finished product is about 2 cm. The texture types in sub-surface of hot rolled plate are mainly three types of typical shear textures. The texture of cold rolled plate is mainly composed of α line texture and rotating cube texture{001}<110>,the texture after decarburizing annealing is mainly α* texture and γ line texture{111}<112>as well as the macrotexture after high temperature annealing is mainly Goss texture. The texture of Hi-B steel after stretching,leveling and annealing is single Goss texture with accurate orientation as well as its strength reaches peak.
关键词
高磁感取向硅钢/显微组织/织构演变/常化退火/高温退火
Key words
Hi-B steel/microstructure/texture evolution/normalizing annealing/high temperature annealing
维普
万方数据