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<p>This study explores the influence of ultrasonic impact treatment (UIT) on the microcutting performance of high-strength materials, with a focus on analyzing cutting force, residual stress and surface roughness. Two experimental groups were established in the experiment: the ultrasonic shock treatment group (U + OC) and the untreated control group (OC). The experiments were conducted at four different cutting depths (20, 50, 80 and 110&#xa0;μm). The results show that ultrasonic impact treatment enhances the material hardness and increases the residual compressive stress on the surface. At a shallow cutting depth of 20&#xa0;μm, the cutting force of the U + OC group is 13.7% higher than that of the OC group. However, as the cutting depth increases, the cutting force of the U + OC group gradually decreases and is lower than that of the OC group after a depth of 50&#xa0;μm. Especially at a depth of 110&#xa0;μm, the cutting force of the U + OC group is 15% lower than that of the OC group. In addition, the finite element simulation results reveal the redistribution of residual stress caused by ultrasonic impact and its influence on plastic deformation, further verifying that ultrasonic impact treatment improves surface quality. When the cutting depth reached 110&#xa0;μm, the surface roughness of the U + OC group was reduced by 37% compared with the OC group. These quantitative results indicate that ultrasonic impact treatment significantly enhances microcutting performance, especially at deeper cutting depths, demonstrating the potential to optimize cutting force and surface quality.</p>

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Study on the Effect of Ultrasonic Impact Treatment on the Micro-machinability of HfZrTiTaAl High-Entropy Alloys

  • 期刊论文

  • 发表日期：

    2026年4月11日

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  • Junbao Zhang,
  • Ping Zhang,
  • Yunxu Shi,
  • Zirun Liu

摘要

This study explores the influence of ultrasonic impact treatment (UIT) on the microcutting performance of high-strength materials, with a focus on analyzing cutting force, residual stress and surface roughness. Two experimental groups were established in the experiment: the ultrasonic shock treatment group (U + OC) and the untreated control group (OC). The experiments were conducted at four different cutting depths (20, 50, 80 and 110 μm). The results show that ultrasonic impact treatment enhances the material hardness and increases the residual compressive stress on the surface. At a shallow cutting depth of 20 μm, the cutting force of the U + OC group is 13.7% higher than that of the OC group. However, as the cutting depth increases, the cutting force of the U + OC group gradually decreases and is lower than that of the OC group after a depth of 50 μm. Especially at a depth of 110 μm, the cutting force of the U + OC group is 15% lower than that of the OC group. In addition, the finite element simulation results reveal the redistribution of residual stress caused by ultrasonic impact and its influence on plastic deformation, further verifying that ultrasonic impact treatment improves surface quality. When the cutting depth reached 110 μm, the surface roughness of the U + OC group was reduced by 37% compared with the OC group. These quantitative results indicate that ultrasonic impact treatment significantly enhances microcutting performance, especially at deeper cutting depths, demonstrating the potential to optimize cutting force and surface quality.