异步轧制下无取向硅钢的冷轧织构.pdf

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∥RD) fiber and relatively weak complete γfiber 〈( 111〉
∥ND) no matter what rolling schedule is taken on , but asymmetric rolling affects greatly the
textural strength and its distribution along thickness. Asymmetric rolling has a greater effect on
textural strength of surface and middle layers than on the quarter layer , and it reduces both αand
γfibers with decreasing {111}〈110〉component , but the {111}〈112〉component increases
somewhat. Thus , the application of asymmetric rolling to cold rolling process can provide a new
approach to control and optimize the texture of high grade N GO silicon steel sheet .
Key words : non oriented silicon steel ; texture ; asymmetric rolling ; symmetric rolling ; shear
strain
无取向硅钢是广泛应用于电力、电子、军工等 异步轧制是两个工作辊面速度不等的轧制方
领域的重要软磁材料 ,其磁性能取决于两个关键 式 ,具有精度高、表面质量好、道次压下量大和能
结构参数 再结晶织构和晶粒尺寸·长期以来 , 耗低等优势·更重要的是 ,异步轧制的独特搓轧变
相关理论和技术研究主要集中在晶粒尺寸控制 形可望实现对板材应变状态及其沿厚度层分布的
上 ,现已接近通过调控成分和加工参数所能达到 有效调控 ,进而优化冷轧织构·现有研究表明 ,异
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的优化极限 ·相反 ,织构控制和优化的研究很 步轧制显著影响 Fe ,Al ,Mg 等[2