The slab low-temperature reheating grain-oriented silicon steel was prepared in the laboratory, and the high-temperature annealing interruption tests were carried out. The effects of aluminum (which meant acid-soluble aluminum) on the grain size texture, precipitate, magnetic properties and their correlations were studied. The results showed that with the increase in aluminum element, the grain size decreased, while the intensity of {114}<481> and {111}<112> textures increased in the primary recrystallization structure. Meanwhile, the pinning force during the secondary recrystallization and the onset secondary recrystallization temperature were increased. The precipitates were concluded to have a more important role on determining the onset secondary recrystallization temperature than the primary grain size. The higher onset temperature resulted in sharper Goss texture and the better magnetic properties, but when the aluminum content came up to a certain extent, a fine-grain structure was developed. The most suitable aluminum content for present study was 0.025 wt.%, while the onset secondary recrystallization temperature and the primary texture were considered to be conducive to the sharpness of Goss texture.

在实验室中准备了板坯低温再热取向硅钢，并进行了高温退火中断试验。研究了铝（意味着酸溶性铝）对晶粒尺寸，析出物，磁性和相关性的影响。结果表明，随着铝元素的增加，晶粒的尺寸减小，而{114} <481>和{111} <112>织构的强度在一次再结晶组织中增加。同时，二次重结晶期间的钉扎力和开始的二次重结晶温度增加。得出的结论是，在确定起始二次重结晶温度方面，沉淀物比初生晶粒尺寸具有更重要的作用。起始温度越高，戈斯织构越尖锐，磁性能越好，但是当铝含量达到一定程度时，就会形成细晶粒结构。当前研究中最合适的铝含量为0.025 wt。％，而开始的二次重结晶温度和初始织构被认为有利于高斯织构的清晰度。