Scholarlink

<p>To investigate the effect of Mg–Ce treatment on the inclusion evolution of Al pre-deoxidized M50 aerospace bearing steels, laboratory experiments and computational simulation were conducted to investigate the inclusion behavior during different stages of the vacuum induction melting process. The type, morphology, and distribution of inclusions in M50 steels were characterized using the optical microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy and ASPEX explorer. The phase distribution of inclusions during smelting and solidification were simulated using FactSage 8.2 software to elucidate the evolution mechanism of diverse inclusions. The results reveal that the initially formed Al<sub>2</sub>O<sub>3</sub> and spinel inclusions were progressively modified into MgO and subsequently into Ce<sub>2</sub>O<sub>2</sub>S wrapped by CeS upon the addition of Mg and Ce. The final inclusion products in the ingots consisted of Ce<sub>2</sub>O<sub>2</sub>S cores enveloped by successive layers of CeS, CeAs, and CeP. Mg demonstrated strong deoxidation capability but limited desulfurization efficiency, whereas both Ce<sub>2</sub>O<sub>2</sub>S and CeS forming after Ce addition can be largely removed from the molten steel by buoyancy. Compared to Mg-only treated steel, the Mg–Ce treated steel showed a significant reduction in the area fraction and size of inclusions but an increase in their number density.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of Mg–Ce Treatment on the Inclusion Evolution of Al Pre-deoxidized M50 Aerospace Bearing Steel During Vacuum Induction Melting Process

  • 期刊论文

  • 发表日期：

    2025年6月4日

查看全文
  • Lichao Wang,
  • Jialong Tian,
  • Ji Ren,
  • Chenggang Jiang,
  • Zhouhua Jiang,
  • Zhimin You

摘要

To investigate the effect of Mg–Ce treatment on the inclusion evolution of Al pre-deoxidized M50 aerospace bearing steels, laboratory experiments and computational simulation were conducted to investigate the inclusion behavior during different stages of the vacuum induction melting process. The type, morphology, and distribution of inclusions in M50 steels were characterized using the optical microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy and ASPEX explorer. The phase distribution of inclusions during smelting and solidification were simulated using FactSage 8.2 software to elucidate the evolution mechanism of diverse inclusions. The results reveal that the initially formed Al2O3 and spinel inclusions were progressively modified into MgO and subsequently into Ce2O2S wrapped by CeS upon the addition of Mg and Ce. The final inclusion products in the ingots consisted of Ce2O2S cores enveloped by successive layers of CeS, CeAs, and CeP. Mg demonstrated strong deoxidation capability but limited desulfurization efficiency, whereas both Ce2O2S and CeS forming after Ce addition can be largely removed from the molten steel by buoyancy. Compared to Mg-only treated steel, the Mg–Ce treated steel showed a significant reduction in the area fraction and size of inclusions but an increase in their number density.