通过实验和微观尺度模拟计算，探索以CSP(薄板坯连铸连轧)方式生产的HiB取向硅钢热轧过程以及后续冷轧和热处理过程中微观组织的演变和Goss织构的形成机理。采用扫描电镜EBSD和TEM技术观察微观结构、第二相质点析出,利用ASM研究晶界偏聚形态及偏聚量，用化学分析法测定MnS, AlN等抑制剂的形貌及数量; 利用同步加速器的辐射SAXS测定晶粒形核率、长大速度, 建立与此相关的动力学模型；通过热模拟实验研究变形及组织形貌关系。结合塑性有限元(CPFEM)和元胞自动机(CA)耦合系统研究应力、应变、晶界、变形带等,获得抑制剂的均匀分布和储能的非均匀分布及其对形核长大行为的影响，解决微观变形不均匀性与晶粒取向之间的关系问题。揭示CSP这种特定方式生产HiB钢在热轧，冷轧和热处理过程中组织演变以及织构形成的规律，对指导采用CSP生产HiB取向硅钢热轧基板及随后冷轧和热处理工艺控制具有开拓性意义。

The experiment and simulation calculation in microscopic size are done to research the formation mechanism of microstructure evolution and the Gross texture of the HiB orientated silicon steel in hot rolling and following cold rolling and heat treatment processes. Several approaches are taken to get the results: using scanning electron microscopy-EBSD and transition electronic microscopy technologies to observe microstructure and the second phase particles precipitate; adopting ASM to research the quantity of elements gathered in grain boundary; using chemical analysis to measure the inhibitory quantity of MnS, AlN, etc.; applying synchrotron to measure the grain nucleation rate and grain growth velocity to establish the dynamic model for grain nucleation and orientation and growing velocity; doing thermal simulation experiment to study nucleation and structure morphology. On this basis, the grain plastic finite element model system is combined to research stress and strain and obtain the even distribution of inhibitory、the uneven distribution of storage energy and the impact of inhibitor on nucleation and growth behavior and then resolve the relationship between non-uniform micro deformation and grain orientation. This project researches the structure evolution rule and microstructure texture in hot rolling and following cold rolling and heat treatment process of HiB steel produced by the particular mode of CSP, which guides us to produce HiB orientated silicon steel based on the hot rolling substrate with CSP and control the following cold rolling and heat treatment technologies with pioneering significance.