取向硅钢薄带形变再结晶组织及织构演变

发布时间：2019-04-19 02:41

【摘要】：利用背散射电子衍射微织构分析技术及X射线衍射织构分析技术,结合对取向硅钢薄带再结晶各阶段退火板磁性能的分析,系统研究了其形变再结晶过程中的组织及织构演变.结果表明,薄带内原始高斯晶粒取向发生绕TD轴向{111}〈112〉的转变,同时晶粒取向还表现出绕RD轴的附加转动,这种附加转动及其导致的表层微弱立方形变组织可为再结晶立方织构的形成提供核心.退火各阶段样品磁性能的变化对应了{110}-{100}〈001〉有益织构及其他织构的强弱转变以及再结晶晶粒不均匀程度的变化,综合织构类型及晶粒尺寸的变化推断发生了二次及三次再结晶过程.升温过程再结晶织构演变主要体现了织构诱发机制,也即与基体存在绕〈001〉轴取向关系的晶粒长大优势结合高斯织构的抑制效应发挥作用;而在高温长时间保温后三次再结晶过程,{110}低表面能诱发异常长大发挥主要作用使得最终得到锋锐的高斯织构.
[Abstract]:By means of back scattering electron diffraction microtexture analysis technique and X-ray diffraction texture analysis technique, the microstructure and texture evolution in deformation recrystallization process of oriented silicon steel strip annealed at each stage of recrystallization have been systematically studied by means of the analysis of magnetic properties of the annealed plate at different stages of recrystallization of oriented silicon steel strip. The results show that the original grain orientation of Gao Si in the thin strip changes around the TD axis {111} < 112 >, and the grain orientation also shows additional rotation around the RD axis. This additional rotation and its surface weak cubic deformation structure can provide the core for the formation of recrystallized cubic texture. The changes in magnetic properties of the samples at various annealing stages correspond to the changes in the strength of beneficial texture and other textures and the degree of heterogeneity of recrystallized grains. The secondary and tertiary recrystallization took place according to the change of texture type and grain size. The evolution of recrystallization texture during the heating process mainly reflects the mechanism of texture induction, that is to say, the grain growth advantage of < 001 > axial orientation relation with the matrix and the inhibition effect of Gao Si texture play an important role in the evolution of recrystallization texture. In the process of recrystallization after high temperature and long time holding, the abnormal growth induced by {110} low surface energy plays a major role in obtaining the sharp texture of Gao Si.
【作者单位】：北京科技大学材料科学与工程学院;
【基金】：国家自然科学基金资助项目(51071024)!
【分类号】：TG142.1

【共引文献】