Influence of Process Parameters on Grain Size and Texture Evolution of Fe-3.2 wt.-% Si Non-Oriented Electrical Steels.
Xuefei Wei,Alexander Krämer,Gerhard Hirt,Anett Stöcker,Rudolf Kawalla,Martin Heller,Sandra Korte-Kerzel,Lucas Böhm,Wolfram Volk,Nora Leuning,Kay Hameyer,Johannes Lohmar +11 more
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In this article, a complete process chain of a non-oriented electrical steel with 3.2 wt.-% Si was studied with regard to hot rolling, cold rolling, and final annealing on laboratory scale.Abstract:
The magnetic properties of non-oriented electrical steel, widely used in electric machines, are closely related to the grain size and texture of the material. How to control the evolution of grain size and texture through processing in order to improve the magnetic properties is the research focus of this article. Therefore, the complete process chain of a non-oriented electrical steel with 3.2 wt.-% Si was studied with regard to hot rolling, cold rolling, and final annealing on laboratory scale. Through a comprehensive analysis of the process chain, the influence of important process parameters on the grain size and texture evolution as well as the magnetic properties was determined. It was found that furnace cooling after the last hot rolling pass led to a fully recrystallized grain structure with the favorable ND-rotated-cube component, and a large portion of this component was retained in the thin strip after cold rolling, resulting in a texture with a low γ-fiber and a high ND-cube component after final annealing at moderate to high temperatures. These promising results on a laboratory scale can be regarded as an effective way to control the processing on an industrial scale, to finally tailor the magnetic properties of non-oriented electrical steel according to their final application.read more
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Grain Size Influence on the Magnetic Property Deterioration of Blanked Non-Oriented Electrical Steels.
Lucas Boehm,Christoph Hartmann,Ines Gilch,A. Stoecker,Rudolf Kawalla,Xuefei Wei,Gerhard Hirt,Martin Heller,Sandra Korte-Kerzel,Nora Leuning,Kay Hameyer,Wolfram Volk +11 more
TL;DR: In this article, the influence of the material's grain size on its iron losses after the blanking process was evaluated and it was shown that blanking-related losses either increase for 0.25 mm thick sheets or decrease with increasing grain size.
Journal ArticleDOI
Modification Mechanism of Lanthanum on Alumina Inclusions in a Nonoriented Electrical Steel
TL;DR: In this article , the modification mechanism of lanthanum on alumina inclusions in a nonoriented electrical steel at 1600°C was investigated using laboratory experiments using an automatic scanning electron microscope equipped with energy-dispersive spectrum at 1, 5, 10, and 30 min after lanthanUM treatment.
Journal ArticleDOI
Microstructure-dependent magnetic properties of iron silicon single, bi- and oligo-crystals measured with a miniaturised Single-Sheet-Tester
TL;DR: In this paper , the effects of orientation, grain boundaries and deformation on the magnetic properties of single, bi-and oligo-crystals using a miniaturized Single-Sheet-Tester were quantified.
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Influence of chemical composition and processing conditions on the microstructure and magnetic properties of low-carbon Si-Al-Sb electrical steel sheets
Fátima Hernández-Navarro,E. Gutiérrez Castañeda,V.E. Salazar Muñoz,A. Bedolla Jacuinde,R. Deaquino Lara,A. Salinas Rodriguez,Patricia del Carmen Zambrano-Robledo +6 more
TL;DR: In this paper , the microstructure and magnetic properties of Si-Al-Sb electrical steels processed by the alternative processing route were investigated, and the results showed that SiAl-sb steels with the alternative route exhibit better performance than those with the conventional route.
References
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A novel pole figure inversion method: specification of the MTEX algorithm
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New discoveries in deformed metals
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P. R. Rios,Fulvio Siciliano,Hugo Ricardo Zschommler Sandim,Ronald Lesley Plaut,Angelo Fernando Padilha +4 more
TL;DR: The evolution in the understanding of the recrystallization phenomena is summarized in this article, where the main developments concerning recrestallization are presented from a historical perspective, as well as definitions and concepts involving recrasing are presented regarding it as a solid-state reaction that occurs by nucleation and growth.
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Stress induced grain boundary motion
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