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<p>Ti-6Al-4&#xa0;V (Ti64) components produced by laser powder bed fusion (LPBF) with their tribological behavior under various lubrication conditions are the main focus of our research into the lubricant wear performance of these components. The pin-on-disk testing technique was employed to evaluate the wear performance of Ti-6Al-4&#xa0;V components manufactured by LPBF in compliance with ASTM G99 requirements. To evaluate their effects on wear behavior and friction characteristics, three lubrication environments, such as SAE 90W oil, SAE 140W oil, and distilled water, were investigated under different loads and sliding speeds. SEM, or scanning electron microscopy, was used to investigate wear mechanisms. According to the findings, SAE 90W oil performs better than other oils, reducing wear loss and smoothing wear tracks by developing stable tribofilm. The most suitable option for striking a balance between wear protection and operational economy is SAE 90W oil, even if SAE 140W oil offered improved viscosity and wear resistance owing to its restricted appropriateness for high-speed applications. These findings highlight SAE 90W oil as the most effective lubricant to improve wear resistance and operating longevity, providing insightful information for industrial and aerospace applications. The SAE 90W oil delivers superior wear resistance and friction reduction for Ti-6Al-4&#xa0;V components produced by LPBF, compared to SAE 140W oil and distilled water under various conditions. This highlights its effectiveness for industrial and aerospace applications.</p>

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Microstructural and Tribological Analysis of Additively Manufactured Ti-6Al-4 V under Lubrication

  • 期刊论文

  • 发表日期：

    2025年9月30日

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  • T. Balasubramani,
  • N. M. Sivaram,
  • J. Ronald Aseer,
  • N. Mathan Kumar

摘要

Ti-6Al-4 V (Ti64) components produced by laser powder bed fusion (LPBF) with their tribological behavior under various lubrication conditions are the main focus of our research into the lubricant wear performance of these components. The pin-on-disk testing technique was employed to evaluate the wear performance of Ti-6Al-4 V components manufactured by LPBF in compliance with ASTM G99 requirements. To evaluate their effects on wear behavior and friction characteristics, three lubrication environments, such as SAE 90W oil, SAE 140W oil, and distilled water, were investigated under different loads and sliding speeds. SEM, or scanning electron microscopy, was used to investigate wear mechanisms. According to the findings, SAE 90W oil performs better than other oils, reducing wear loss and smoothing wear tracks by developing stable tribofilm. The most suitable option for striking a balance between wear protection and operational economy is SAE 90W oil, even if SAE 140W oil offered improved viscosity and wear resistance owing to its restricted appropriateness for high-speed applications. These findings highlight SAE 90W oil as the most effective lubricant to improve wear resistance and operating longevity, providing insightful information for industrial and aerospace applications. The SAE 90W oil delivers superior wear resistance and friction reduction for Ti-6Al-4 V components produced by LPBF, compared to SAE 140W oil and distilled water under various conditions. This highlights its effectiveness for industrial and aerospace applications.