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<p>This study offers a comprehensive analysis of the correlation between the wear resistance properties of TiAlN/TiAlSiN coatings and their durability during the milling process of Ti6Al4V alloys. TiAlN and TiAlSiN coatings were successfully deposited on carbide test blocks and tools using multi-arc ion plating technology. The coatings’ microstructure, surface morphology, and chemical composition were characterized using SEM, XRD, EDS, and AFM. The results show that, compared to the TiAlN coating, the TiAlSiN coating exhibited more surface defects, higher surface roughness, and greater hardness. In wear behavior tests, the TiAlN coating demonstrated lower friction coefficients and wear rates from room temperature to 200&#xa0;°C, while the TiAlSiN coating exhibited superior wear resistance and high-temperature oxidation resistance from 400 to 600&#xa0;°C. An innovative multidimensional tool wear assessment method was introduced in the milling performance study of Ti6Al4V materials. The results indicated that although the TiAlN coating provided better initial workpiece surface quality, its wear resistance and stability were inferior to those of the TiAlSiN coating during prolonged milling. The conclusions are as follows: (1) The TiAlN coating is more suitable for finishing applications requiring high surface quality, whereas the TiAlSiN coating is better suited for roughing applications demanding extended tool life; (2) Abnormal wear of the TiAlN coating was observed at 400&#xa0;°C, likely due to chemical reactions or physical phase transformations at high temperatures. This study provides new insights for the scientific selection and application of tool coatings and has been practically applied in industrial production.</p>

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A Study on the correlation between wear resistance and milling Ti6Al4V performance of TiAlN and TiAlSiN coatings

  • 期刊论文

  • 发表日期：

    2025年9月22日

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  • Yimin Jiang,
  • Ming Zhou,
  • Yan Zhu,
  • Yu Tian,
  • Mingyang Yang,
  • Lifeng Zhan,
  • Junqi Li

摘要

This study offers a comprehensive analysis of the correlation between the wear resistance properties of TiAlN/TiAlSiN coatings and their durability during the milling process of Ti6Al4V alloys. TiAlN and TiAlSiN coatings were successfully deposited on carbide test blocks and tools using multi-arc ion plating technology. The coatings’ microstructure, surface morphology, and chemical composition were characterized using SEM, XRD, EDS, and AFM. The results show that, compared to the TiAlN coating, the TiAlSiN coating exhibited more surface defects, higher surface roughness, and greater hardness. In wear behavior tests, the TiAlN coating demonstrated lower friction coefficients and wear rates from room temperature to 200 °C, while the TiAlSiN coating exhibited superior wear resistance and high-temperature oxidation resistance from 400 to 600 °C. An innovative multidimensional tool wear assessment method was introduced in the milling performance study of Ti6Al4V materials. The results indicated that although the TiAlN coating provided better initial workpiece surface quality, its wear resistance and stability were inferior to those of the TiAlSiN coating during prolonged milling. The conclusions are as follows: (1) The TiAlN coating is more suitable for finishing applications requiring high surface quality, whereas the TiAlSiN coating is better suited for roughing applications demanding extended tool life; (2) Abnormal wear of the TiAlN coating was observed at 400 °C, likely due to chemical reactions or physical phase transformations at high temperatures. This study provides new insights for the scientific selection and application of tool coatings and has been practically applied in industrial production.