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<p>The magnetic properties of high-silicon materials can be improved by using cryogenic strip process, but its plasticity and formability are poor. The impact of NiAl addition, milling time, and sintering duration on the magnetic properties of Fe–6.5 wt pct Si steel, as well as the texture changes during the process, were investigated. Here, we demonstrate that the steel strip sample with 2 wt pct NiAl dosage exhibits superior magnetic properties. It possesses the highest saturation magnetization (<i>M</i><sub>s</sub>) at 231.30 emu/g, the lowest saturation remanence (<i>M</i><sub>r</sub>) at 0.105 emu/g, and a coercivity of <i>H</i><sub>c</sub>&#xa0;=&#xa0;30.52 Oe. After 18&#xa0;hours of ball milling, a uniform distribution at the nanometer level was achieved, followed by gradient high-temperature annealing. The movement of grain boundaries in the GOSS texture was accelerated due to inhibitors or impurities nailing the grain boundary. It was observed that the development of η texture was promoted and the growth of γ texture was inhibited at 800&#xa0;°C, resulting in optimal magnetic properties at this temperature (<i>M</i><sub>s</sub>&#xa0;=&#xa0;209.51 emu/g, <i>M</i><sub>r</sub>&#xa0;=&#xa0;0.03 emu/g, <i>H</i><sub>c</sub>&#xa0;=&#xa0;1.88 Oe).</p>

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Texture Evolution and Magnetic Property of Fe–6.5 Pct Si Materials with NiAl Dosage

  • 期刊论文

  • 发表日期：

    2025年2月24日

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  • Di Zhang,
  • Yang Song,
  • Xingrui Yang,
  • Huilan Sun,
  • Yaxu Zheng,
  • Cheng Ma,
  • Yadong She,
  • Bo Wang

摘要

The magnetic properties of high-silicon materials can be improved by using cryogenic strip process, but its plasticity and formability are poor. The impact of NiAl addition, milling time, and sintering duration on the magnetic properties of Fe–6.5 wt pct Si steel, as well as the texture changes during the process, were investigated. Here, we demonstrate that the steel strip sample with 2 wt pct NiAl dosage exhibits superior magnetic properties. It possesses the highest saturation magnetization (Ms) at 231.30 emu/g, the lowest saturation remanence (Mr) at 0.105 emu/g, and a coercivity of Hc = 30.52 Oe. After 18 hours of ball milling, a uniform distribution at the nanometer level was achieved, followed by gradient high-temperature annealing. The movement of grain boundaries in the GOSS texture was accelerated due to inhibitors or impurities nailing the grain boundary. It was observed that the development of η texture was promoted and the growth of γ texture was inhibited at 800 °C, resulting in optimal magnetic properties at this temperature (Ms = 209.51 emu/g, Mr = 0.03 emu/g, Hc = 1.88 Oe).