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取向硅钢中锋锐的高斯织构是获得优异磁性能的必要条件,其形成机理受到高度关注,但一直未得到真正解决。本文利用EBSD技术分析了H iB钢热轧板及脱碳退火板中高斯取向晶粒分布的特点,讨论了其对二次再结晶织构的影响。初步结果表明,热轧板次表层中的高斯取向晶粒先是通过形变产生,然后可再结晶形成等轴的高斯取向晶粒;脱碳退火后含较少的高斯取向晶粒和高比例的{111}<11 2>取向晶粒的样品二次再结晶后高斯织构更强,强烈削弱二次再结晶后高斯织构强度的主要是{111}<1 10>取向晶粒。
Oriented silicon steel center sharp Gaussian texture is the necessary conditions for obtaining excellent magnetic properties, the formation mechanism has received great attention, but has not been really resolved. In this paper, the EBSD technique was used to analyze the characteristics of Gaussian orientation grain distribution in hot-rolled and decarbonized sheets of H iB steel, and its effect on secondary recrystallization texture was discussed. The preliminary results show that the Gaussian grains in the subsurface of hot-rolled sheet are first produced by deformation and then recrystallized to form equiaxed Gaussian grains. After decarburization annealing, Gaussian grains with fewer grains and high proportion of { 111} <11 2> oriented grains, the Gaussian texture is stronger after secondary recrystallization, which strongly weakens the {111} <1 10> oriented grains after the secondary recrystallization.