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采用异步轧制方式将0.75 m m 厚的工业取向硅钢板材冷轧至0.35 m m ,然后用工业退火工艺对板材进行热处理,研究了剪切变形条件下的织构形成与转变机理。结果表明:双向轧制能有效地消除剪切应力导致织构组分偏离的影响,并获得比常规轧制板材更为理想的冷轧织构组态;亚表层上形成较强的{111}< 112> 织构可能是源于不同于其它层的特殊形变方式;脱碳退火后板材亚表层上的Goss晶粒与绝大多数晶粒都有单轴重合的取向关系,这种特殊性可能是Goss晶粒在二次再结晶退火中能够异常长大的一种机制。
The 0.75 m thick industrial grain oriented silicon steel sheets were cold rolled to 0.35 m m by asynchronous rolling, and then the sheet was heat treated by industrial annealing process. The texturing and transformation mechanism under shear deformation was studied . The results show that bidirectional rolling can effectively eliminate the influence of shear stress on the deviation of texture components and obtain a more ideal cold-rolled texture configuration than that of conventional rolled sheet. The strong {111} <112> texture may be due to different from other layers of special deformation; decarburization annealed sheet Goss on the sub-surface of the crystal grain and the vast majority of grains have a uniaxial coincidence orientation, this particularity may be Is a mechanism by which Goss grains can abnormally grow in secondary recrystallization annealing.