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<p>This study aims to investigate the turning machinability of HfZrTiTaAl high-entropy alloy. Using ABAQUS software for a single-factor simulation, the effects of cutting depth, cutting speed, and friction coefficient on cutting force, cutting temperature, and residual stress were analyzed. The workpieces were examined via SEM analysis, and some results were experimentally validated. The findings indicate that the cutting force is positively correlated with the cutting depth and cutting speed. When the cutting depth reaches 5&#xa0;mm, the cutting force increases 294%. When the cutting speed reaches 170&#xa0;m/min, the cutting force increases by 9.6%. When the friction coefficient is low, cutting force increases with the friction coefficient until it stabilizes at a friction coefficient of 0.2. At smaller cutting depths, cutting temperature is relatively high. When the cutting depth changes from 1 to 3&#xa0;mm, the cutting temperature gradually increases to 1239&#xa0;°C, and then the thermal conductivity is reduced due to the change of chip shape, so that the cutting temperature is reduced. Cutting temperature shows a positive correlation with both cutting speed and friction coefficient. After machining, surface residual stress mainly manifests as residual tensile stress, which transitions to residual compressive stress with the increase of surface layers. By X-ray diffractometer, it is found that the maximum residual compressive stress appears in the subsurface layer, and the residual stress curve shows a “scoop” shape with the change of cutting parameters. During the cutting process, a distinct white layer is visible in the subsurface microstructure of the workpiece, and higher cutting speeds result in better surface quality.</p>

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Study on the influence of cutting parameters on the machinability of HfZrTiTaAl high-entropy alloy

  • 期刊论文

  • 发表日期：

    2025年5月8日

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  • Junbao Zhang,
  • Ping Zhang,
  • Yunxu Shi,
  • Guohong Li

摘要

This study aims to investigate the turning machinability of HfZrTiTaAl high-entropy alloy. Using ABAQUS software for a single-factor simulation, the effects of cutting depth, cutting speed, and friction coefficient on cutting force, cutting temperature, and residual stress were analyzed. The workpieces were examined via SEM analysis, and some results were experimentally validated. The findings indicate that the cutting force is positively correlated with the cutting depth and cutting speed. When the cutting depth reaches 5 mm, the cutting force increases 294%. When the cutting speed reaches 170 m/min, the cutting force increases by 9.6%. When the friction coefficient is low, cutting force increases with the friction coefficient until it stabilizes at a friction coefficient of 0.2. At smaller cutting depths, cutting temperature is relatively high. When the cutting depth changes from 1 to 3 mm, the cutting temperature gradually increases to 1239 °C, and then the thermal conductivity is reduced due to the change of chip shape, so that the cutting temperature is reduced. Cutting temperature shows a positive correlation with both cutting speed and friction coefficient. After machining, surface residual stress mainly manifests as residual tensile stress, which transitions to residual compressive stress with the increase of surface layers. By X-ray diffractometer, it is found that the maximum residual compressive stress appears in the subsurface layer, and the residual stress curve shows a “scoop” shape with the change of cutting parameters. During the cutting process, a distinct white layer is visible in the subsurface microstructure of the workpiece, and higher cutting speeds result in better surface quality.