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      https://www.ias.ac.in/article/fulltext/boms/034/07/1477-1482

    • Keywords

       

      Non-oriented electrical steel; rapid heating; recrystallized grain-size; recrystallization texture; orientation distribution function (ODF); magnetic properties.

    • Abstract

       

      The rapid heating effects on the microstructure, texture and magnetic properties of 3% Si nonoriented electrical steel has been investigated through optical microscopy, X-ray diffraction and Epstein frame. The results show that recrystallized grains were refined with increased heating rate, caused by the nucleation rate increase, which is faster than the growth rate due to rapid hearting. With the heating rate increase, the characteristic {111} recrystallization fibre of cold-rolled steel was depressed, but the beneficial $\langle$001$\rangle$//RD and $\langle$001$\rangle$//ND fibres were significantly strengthened. Although the grain-size decreases with heating rate increasing, the optimal magnetic properties can also be obtained through the recrystallized grain-size and texture optimization by rapid heating. In this research, we find the magnetic properties optimization can be obtained when annealed with 100°C/s heating rate: the core loss ($P_{1.5/50}$) decrease 13% and the magnetic induction ($B_{50}$) increase 3%.

    • Author Affiliations

       

      Jian Wang1 Jun Li1 Xinfeng Wang2 Xiaochuan Mi1 Shengen Zhang3

      1. Baoshan Iron and Steel Co. Ltd., Shanghai 201900, China
      2. Beijing Electronic Science Vocational College, Beijing 100026, China
      3. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
    • Dates

       
  • Bulletin of Materials Science | News

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