Significant effect of as-cast microstructure on texture evolution and magnetic properties of strip cast non-oriented silicon steel
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2018年第12期
论文作者：Haitao Jiao Yunbo Xu Wenzheng Qiu Haijie Xu R.D.K.Misra Jianping Li Guodong Wang
文章页码：2472 - 2479
摘 要：In this study, two types of as-cast microstructure produced by strip casting were cold rolled and annealed to investigate the effect of initial microstructure on the textural evolution and magnetic properties of non-oriented silicon steel. The results indicated that the cold-rolled sheets of coarse-grained strip with pronounced {100} components exhibited stronger 入 fiber（<100>//ND） and weaker γ fiber（<111>//ND）texture as composed to the fine-grained strip with strong Goss（{110}（001）） texture. After annealing, the former was dominated by η fiber（<001>//RD） texture with a peak at {110}<001)orientation, while the latter consisted of strong {111}（112） and relatively weak {110}（001） texture. In addition, a number of precipitates of size ～30-150 nm restricted the grain growth during annealing, resulting in recrystallization of grain size of ～46 μm in the coarse-grained specimen and ～41μm in the fine-grained specimen.Ultimately, higher magnetic induction（～1.72 T） and lower core loss（～4.04 W/kg） were obtained in the final annealed sheets of coarse-grained strip with strong {100} texture.
Haitao Jiao1，Yunbo Xu1，Wenzheng Qiu1，Haijie Xu1，R.D.K.Misra2，Jianping Li1，Guodong Wang1
1. State Key Laboratory of Rolling and Automation,Northeastern University2. Laboratory for Excellence in Advanced steel Research,Department of Metallurgical,Materials,and Biomedical Engineering,University of Texas at El Paso
摘 要：In this study, two types of as-cast microstructure produced by strip casting were cold rolled and annealed to investigate the effect of initial microstructure on the textural evolution and magnetic properties of non-oriented silicon steel. The results indicated that the cold-rolled sheets of coarse-grained strip with pronounced {100} components exhibited stronger 入 fiber（<100>//ND） and weaker γ fiber（<111>//ND）texture as composed to the fine-grained strip with strong Goss（{110}（001）） texture. After annealing, the former was dominated by η fiber（<001>//RD） texture with a peak at {110}<001)orientation, while the latter consisted of strong {111}（112） and relatively weak {110}（001） texture. In addition, a number of precipitates of size ～30-150 nm restricted the grain growth during annealing, resulting in recrystallization of grain size of ～46 μm in the coarse-grained specimen and ～41μm in the fine-grained specimen.Ultimately, higher magnetic induction（～1.72 T） and lower core loss（～4.04 W/kg） were obtained in the final annealed sheets of coarse-grained strip with strong {100} texture.
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