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<p>This study addresses the challenges of preparing high-quality surface textures on the difficult-to-machine TB9 titanium alloy by proposing an ultrasonic elliptical vibration cutting method for β titanium alloy. The process and morphology of texture formation were analyzed, optimizing the equation for elliptical cutting trajectories and designing ultrasonic elliptical vibration trajectories. An analytical model was derived to quantify the relationship between cutting speed and texture length. Surfaces with turning, five types of elliptical cutting trajectories, and five types of broken line cutting trajectory textures were prepared, and experimental parameters were optimized. Results showed that ultrasonic cutting produced fish-scale, multi-level micro-nanocomposite surface textures with high quality. The optimal texture morphology was achieved at a feed rate of 0.03&#xa0;mm/r and a cutting depth of 0.02&#xa0;mm. Additionally, the study characterized surface morphology and internal micro-nanocomposite textures under varying parameters. Elliptical cutting trajectory textures were smooth, while broken line trajectory textures were steep, exhibiting good connectivity at a texture length of 9&#xa0;μm.</p>

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Evolution mechanism of micro-texture morphology in ultrasonic elliptical vibration cutting of TB9 titanium alloy

  • 期刊论文

  • 发表日期：

    2025年9月3日

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  • Ying Meng,
  • Yongzhi Pan,
  • Yuhan Sun,
  • Hao Liang,
  • Teng Li,
  • Xiuli Fu

摘要

This study addresses the challenges of preparing high-quality surface textures on the difficult-to-machine TB9 titanium alloy by proposing an ultrasonic elliptical vibration cutting method for β titanium alloy. The process and morphology of texture formation were analyzed, optimizing the equation for elliptical cutting trajectories and designing ultrasonic elliptical vibration trajectories. An analytical model was derived to quantify the relationship between cutting speed and texture length. Surfaces with turning, five types of elliptical cutting trajectories, and five types of broken line cutting trajectory textures were prepared, and experimental parameters were optimized. Results showed that ultrasonic cutting produced fish-scale, multi-level micro-nanocomposite surface textures with high quality. The optimal texture morphology was achieved at a feed rate of 0.03 mm/r and a cutting depth of 0.02 mm. Additionally, the study characterized surface morphology and internal micro-nanocomposite textures under varying parameters. Elliptical cutting trajectory textures were smooth, while broken line trajectory textures were steep, exhibiting good connectivity at a texture length of 9 μm.