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选取工业生产的3种不同成分的无取向硅钢铸锭,对无取向硅钢铸锭采取相同的热轧工艺,分别利用金相和EBSD技术对热轧板的组织和微观织构进行分析,分析化学成分对无取向硅钢热轧组织和织构分布的影响。结果表明:化学成分对无取向硅钢热轧组织有影响。Si和Mn能够推迟回复再结晶的发生;Si和Al促进再结晶晶粒的长大。典型元素的含量对热轧板不同层的织构分布有影响。在热轧板亚表层,铜型织构和高斯织构为主要织构类型。Al的存在提高高斯织构的含量,而减少铜型织构的含量;Si含量的增加促进高斯织构转变为铜型织构和黄铜织构。在热轧板从表面到心部1/2层,出现较高强度的γ织构,Si有利于提高γ织构的含量并减少旋转立方织构的含量,Mn减少γ织构的含量并且提高旋转立方织构的含量;Al有利于降低{111}<121>织构含量并提高旋转立方织构含量。在热轧板心部,Al有利于增加{111}<121>织构含量并减少旋转立方织构和铜型织构的含量;Si可以增加γ织构的含量,减少旋转立方织构的含量;Mn择优的阻碍{111}面取向晶粒生长,进而降低γ织构含量。
Three kinds of non-oriented silicon steel ingots with different compositions were selected and the same hot rolling process was adopted for the non-oriented silicon steel ingots. The microstructure and microstructure of the hot-rolled plate were analyzed by metallographic and EBSD techniques respectively. Effect of Composition on Hot Rolling Structure and Texture Distribution of Non - Oriented. The results show that the chemical composition has influence on hot-rolled microstructure of non-oriented silicon steel. Si and Mn can postpone the recrystallization. Si and Al promote the growth of recrystallized grains. The content of typical elements affects the texture distribution of different layers of hot-rolled sheet. In the hot-rolled sheet sub-surface, copper-based texture and Gaussian texture as the main texture type. The presence of Al increases the content of Gaussian texture and reduces the content of copper texture. The increase of Si content promotes the transformation of Gaussian texture into copper texture and brass texture. In the hot-rolled sheet from the surface to the heart of the 1/2 layer, the emergence of higher intensity γ texture, Si is conducive to increasing the content of γ texture and reduce the content of cubic cubic texture, Mn reduce γ texture content and increase The content of the cubic texture of the rotating cube is reduced. Al is beneficial to reduce the texture content of the {111} <121> texture and increase the content of the cubic texture of the rotating cube. In the heart of the hot rolled sheet, Al is beneficial to increase the content of {111} <121> texture and reduce the content of cubic texture and copper texture. Si can increase the content of γ texture and the content of cubic texture ; Mn preferentially impedes the growth of {111} plane-oriented grains, thereby reducing the γ texture content.