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<p>To address the machining challenges of multi-component high-entropy alloys and to investigate their material removal characteristics, this study focuses on the milling performance of CoCrFeNiMn HEA. Minimum quantity lubrication (MQL) technology was employed in milling experiments and compared with dry milling, with emphasis on cutting force and surface roughness. The effects of milling parameters on bottom-surface roughness and burr formation were systematically analyzed through a combination of single-factor and orthogonal experiments. The results indicate that under the given experimental conditions, the material removal mechanism of CoCrFeNiMn HEA is purely plastic deformation. Compared with dry milling, MQL significantly reduces cutting force and improves surface quality, with its advantages becoming more pronounced as the milling depth increases. Both surface roughness and burr height increase with higher feed speed and milling depth, but decrease with increasing spindle speed. This study provides a theoretical foundation for the application of MQL technology in machining difficult-to-cut materials and offers technical guidance for improving the milling quality of HEAs.</p>

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Experimental investigations into surface quality of milling with minimal quantity lubrication for multi elements high-entropy alloy

  • 期刊论文

  • 发表日期：

    2025年7月14日

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  • Jinkai Hu,
  • Yin Liu,
  • Yanwei Wu,
  • Heran Yang,
  • Zhixu Dong,
  • Xingwei Sun,
  • Shibo Mu,
  • Hongxun Zhao,
  • Sheng Qu

摘要

To address the machining challenges of multi-component high-entropy alloys and to investigate their material removal characteristics, this study focuses on the milling performance of CoCrFeNiMn HEA. Minimum quantity lubrication (MQL) technology was employed in milling experiments and compared with dry milling, with emphasis on cutting force and surface roughness. The effects of milling parameters on bottom-surface roughness and burr formation were systematically analyzed through a combination of single-factor and orthogonal experiments. The results indicate that under the given experimental conditions, the material removal mechanism of CoCrFeNiMn HEA is purely plastic deformation. Compared with dry milling, MQL significantly reduces cutting force and improves surface quality, with its advantages becoming more pronounced as the milling depth increases. Both surface roughness and burr height increase with higher feed speed and milling depth, but decrease with increasing spindle speed. This study provides a theoretical foundation for the application of MQL technology in machining difficult-to-cut materials and offers technical guidance for improving the milling quality of HEAs.