中文摘要：

在实验室模拟CSP工艺试制了Hi-B钢,对不同退火时间下的初次再结晶试样进行了金相组织观察,并采用EBSD技术观察试样的微观织构,研究了Hi-B钢初次再结晶退火过程中组织及再结晶织构的演变行为。结果表明,Hi-B钢在830℃退火时仅15 s完成初次再结晶,在初次再结晶的开始阶段,主要织构为酌织构、α织构及微弱的Goss织构。随着退火时间的延长,织构类型与数量发生变化,移1晶界比例逐渐减小,移3-移9晶界比例变化不大,同时,晶粒取向差的分布转变为以大角度晶界为主。

英文摘要：

Hi-B steel was trial-produced by stimulating CSP process in laboratory. Microstructures of samples of primary recrystallization at different annealing time were observed. And texture of samples was observed by using EBSD technique. Evolution behaviors of the microstructure and recrystallization texture of Hi-B steel in primary recrystallization annealing process were investigated. The results show that the primary recrystallization is finished at 830℃ for 15 s. In the first stage of primary recrystallization, the dominant textures are γ texture, α texture and minor Goss texture. With the increasing of annealing time, the type and number of texture change, the proportion of Σ1 interface decreases, but the proportion of Σ3-Σ9 interface proportion does not change much, while misorientation distributions of grains change into a majority of high angle grain boundaries.