Microstructure, texture and magnetic properties of strip-cast 1.3% Si non-oriented electrical steels
Microstructure, texture and magnetic properties of strip-cast 1.3% Si non-oriented electrical steels
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DOI：
10.1016/j.jmmm.2012.05.046
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发表时间：
2012-10
影响因子：
2.7
通讯作者：
Yuanxiang Zhang;Yunbo Xu;Hai‐Tao Liu;Chenggang Li;Guangming Cao;Zhenyu Liu;Guo-dong Wang
中科院分区：
文献类型：
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作者：
Yuanxiang Zhang;Yunbo Xu;Hai‐Tao Liu;Chenggang Li;Guangming Cao;Zhenyu Liu;Guo-dong Wang
本文研究了双辊薄带连铸工艺制备的1.3%无取向硅钢在不同凝固组织条件下的组织、织构和磁性能的变化。铸态薄带的大量显微组织表明，熔体过热度可以控制铸态薄带的初始凝固组织。当熔体过热度为20 ~ 60°C时，可获得平均晶粒尺寸为100-400μm的薄带组织。在低熔体凝固条件下，在整个铸带厚度范围内形成了几乎随机、弥散、均匀的织构，而在高熔体凝固条件下，形成了相对发达的{100}取向晶粒。提高铸带的初始晶粒度，可使冷轧退火钢板获得较低的铁损和较高的磁感。初始晶粒尺寸较粗的退火板织构具有较强的戈斯成分和{001}纤维，而γ纤维成分较弱，导致导磁率较高。
In this work, the evolution of microstructure, texture and magnetic properties of non-oriented 1.3% silicon steel processed using the twin-roll strip casting was investigated, especially under different solidification structures. A number of microstructures about the as-cast strips show that the initial solidification structure of casting a strip can be controlled by the melt superheats. The microstructures with the average grain size of ∼100–400μm can be obtained in strips when the melt superheats are from 20 to 60°C. A nearly random, diffuse, homogeneous texture under a low melt superheat, but comparatively developed {100} oriented grains are formed under a high melt superheat through the cast strip thickness. The relatively low core loss and high magnetic induction can be obtained in the cold rolled and annealed sheets when increasing the initial grain size of cast-strip. The textures in annealed sheets with coarse initial grain size are characterized by the relatively strong Goss component and {001} fiber but weak γ-fiber component, which lead to the high permeability.