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通过对湿H2气氛下,相同退火温度、不同退火时间的CGO硅钢初次再结晶样品进行金相组织观察,并进行了EBSD微观织构分析,研究了CGO硅钢初次再结晶过程中的组织及再结晶织构演变行为。结果表明,在湿H2气氛下,820℃保温,CGO硅钢初次再结晶过程约在120 s时完成。随着退火时间的延长,γ面上{111}<112>织构含量逐渐减少,{111}<110>织构先减少后增多,随着再结晶的完成,部分{111}<112>取向晶粒向高斯{110}<001>取向转化的同时,也向{111}<110>取向转化,高斯{110}<001>织构含量逐渐增多。高斯取向晶粒较多是由{111}<112>取向晶粒转化而来,同时也证明了CGO硅钢高斯取向晶粒的二次再结晶异常长大生长机制为择优形核。
The microstructure of primary recrystallized CGO steel samples in wet H2 atmosphere, same annealing temperature and different annealing time were observed by microstructure and microstructure analysis of EBSD. The microstructure and recrystallization of primary CGO silicon steel during recrystallization Texture Evolvement Behavior. The results show that the initial recrystallization of CGO silicon steel is completed at about 120 s in a wet H2 atmosphere at 820 ℃. With the extension of annealing time, the content of {111} <112> on γ surface gradually decreases and the texture of {111} <110> decreases first and then increases. With the completion of recrystallization, the {111} <112> orientation While the grains are transformed to the {110} <001> orientation, the grains are transformed to the {111} <110> orientation. The content of the {110} <001> texture gradually increases. The Goss orientation grains are mostly transformed from {111} <112> orientation grains, and also proved that the secondary recrystallization growth mechanism of Goss orientation grains of CGO silicon steel is the preferred nucleation.