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<p>CoCrFeNiMn high-entropy alloy (HEA) produces a large number of burrs and leads to rapid tool wear by conventional milling due to its high plasticity and strength. An icing clamp was used to fix the workpiece to achieve low-temperature milling of HEA, thus improving the cutting performance of HEA. The influence of low-temperature milling parameters on the burr length, burr morphology and chip morphology were analyzed, and the wear mechanism of the tool under the two conditions of low-temperature milling and room-temperature milling was compared and analyzed. The findings reveal that a low-temperature environment significantly reduces burr size by suppressing plastic flow and promoting brittle fracture during chip formation. The primary tool wear mechanisms during high-entropy alloy milling include adhesive and abrasive wear. Low-temperature conditions effectively inhibit adhesive wear, thereby protecting the tool coating and extending tool life.</p>

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Experimental investigations into the effect of low-temperature milling process on burr morphology, chip morphology and tool wear for cocrfenimn high-entropy alloy

  • 期刊论文

  • 发表日期：

    2025年10月20日

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  • Zhenshan Luo,
  • Yin Liu,
  • Heran Yang,
  • Zhixu Dong,
  • Xingwei Sun,
  • Zewei Yuan,
  • Shibo Mu,
  • Hongxun Zhao,
  • Sheng Qu

摘要

CoCrFeNiMn high-entropy alloy (HEA) produces a large number of burrs and leads to rapid tool wear by conventional milling due to its high plasticity and strength. An icing clamp was used to fix the workpiece to achieve low-temperature milling of HEA, thus improving the cutting performance of HEA. The influence of low-temperature milling parameters on the burr length, burr morphology and chip morphology were analyzed, and the wear mechanism of the tool under the two conditions of low-temperature milling and room-temperature milling was compared and analyzed. The findings reveal that a low-temperature environment significantly reduces burr size by suppressing plastic flow and promoting brittle fracture during chip formation. The primary tool wear mechanisms during high-entropy alloy milling include adhesive and abrasive wear. Low-temperature conditions effectively inhibit adhesive wear, thereby protecting the tool coating and extending tool life.