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Experimental investigation and simulation of crystallographic orientations evolution in a cold-rolled ultra-thin grain-oriented silicon steel
Journal of Magnetism and Magnetic Materials ( IF 2.5 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.jmmm.2020.167385
Ning Zhang , Li Meng , Bo Zhang , Yu Han , Fuyao Yang , Guang Ma , Xin Chen , Sheng Zhong , Weimin Mao

Abstract The evolutions of crystallographic orientations and textures of a cold-rolled ultra-thin grain-oriented silicon steel are studied via experimental investigation, texture simulation and orientation evolution calculation. The experimental results show that all components of η-fiber ({0kl} 〈1 0 0〉 ) orientations in raw material demonstrate multi-directional crystal rotation routes during rolling and these initial orientations are retained as small regions distributed within the deformed matrix (mainly {1 1 1} 〈1 1 2〉 ), and the calculated typical transformation of orientations under the cold rolling condition is in good agreement with the experimental results. The crystal orientation of a grain would rotate to {1 1 1} 〈1 1 2〉 after rolling as long as its initial orientation is close to or slightly deviates from exact Goss ({0 1 1} 〈1 0 0〉 ). When the initial orientations deviates towards {0 2 1} 〈1 0 0〉, the final deformed microstructures mainly turn into deviated γ-fiber or display {1 1 3} 〈3 6 1〉 orientations, meanwhile the orientation transition along η-fiber (rotating about 〈1 0 0〉 axis) during rolling is enhanced. Regarding the effect of surface shear on rolling plane towards rolling direction (RD) in ultra-thin steel production, it is suggested to strengthen {1 1 1} 〈1 1 2〉 deformation texture. While for different {0kl} 〈1 0 0〉 components, the same surface shear exerts varied effect on the crystal rotation route, resulting in multiple orientation transition routes in deviated Goss and {0 2 1} 〈1 0 0〉 grains under cold-rolling process.

中文翻译:

冷轧超薄取向硅钢晶体取向演化的实验研究与模拟

摘要 通过实验研究、织构模拟和取向演化计算,研究了冷轧超薄取向硅钢的晶体取向和织构演化。实验结果表明,原材料中 η-纤维 ({0kl} 〈1 0 0〉 ) 取向的所有成分在轧制过程中表现出多方向的晶体旋转路线,并且这些初始取向保留为分布在变形基体中的小区域(主要是{1 1 1} 〈1 1 2〉 ),计算出的冷轧条件下的典型取向转变与实验结果吻合良好。只要晶粒的初始取向接近或略微偏离精确的 Goss ({0 1 1} <1 0 0> ),轧制后晶粒的晶体取向将旋转到 {1 1 1} <1 1 2> 。当初始取向偏离{0 2 1} 〈1 0 0〉时,最终变形的微观结构主要转变为偏离γ-纤维或显示{1 1 3} 〈3 6 1>取向,同时沿η-纤维的取向转变(绕〈1 0 0〉轴旋转)在轧制过程中得到增强。关于超薄钢生产中表面剪切对轧制面朝轧制方向(RD)的影响,建议加强{1 1 1} 〈1 1 2〉变形织构。而对于不同的{0kl} 〈1 0 0〉组分,相同的表面剪切对晶体旋转路线产生不同的影响,导致偏向Goss和{0 2 1} 〈1 0 0〉晶粒在冷-轧制过程。最终变形的微观结构主要转变为偏斜的γ-纤维或显示{1 1 3}<3 6 1>取向,同时在轧制过程中沿η-纤维(绕<1 0 0>轴旋转)的取向转变增强。关于超薄钢生产中表面剪切对轧制面朝轧制方向(RD)的影响,建议加强{1 1 1} 〈1 1 2〉变形织构。而对于不同的{0kl} 〈1 0 0〉组分,相同的表面剪切对晶体旋转路线产生不同的影响,导致偏向Goss和{0 2 1} 〈1 0 0〉晶粒在冷-轧制过程。最终变形的微观结构主要转变为偏斜的γ-纤维或显示{1 1 3}<3 6 1>取向,同时在轧制过程中沿η-纤维(绕<1 0 0>轴旋转)的取向转变增强。关于超薄钢生产中表面剪切对轧制面朝轧制方向(RD)的影响,建议加强{1 1 1} 〈1 1 2〉变形织构。而对于不同的{0kl} 〈1 0 0〉组分,相同的表面剪切对晶体旋转路线产生不同的影响,导致偏向Goss和{0 2 1} 〈1 0 0〉晶粒在冷-轧制过程。关于超薄钢生产中表面剪切对轧制面朝轧制方向(RD)的影响,建议加强{1 1 1} 〈1 1 2〉变形织构。而对于不同的{0kl} 〈1 0 0〉组分,相同的表面剪切对晶体旋转路线产生不同的影响,导致偏向Goss和{0 2 1} 〈1 0 0〉晶粒在冷-轧制过程。关于超薄钢生产中表面剪切对轧制面朝向轧制方向(RD)的影响,建议加强{1 1 1} 〈1 1 2〉变形织构。而对于不同的{0kl} 〈1 0 0〉组分,相同的表面剪切对晶体旋转路线产生不同的影响,导致偏向Goss和{0 2 1} 〈1 0 0〉晶粒在冷-轧制过程。
更新日期:2021-01-01
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