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<p>To address the issues of rapid surface wear and poor frictional performance of magnesium alloys, this study employed femtosecond laser processing to fabricate regular hexagonal micro-textures on the surface of AZ31B magnesium alloy, aiming to enhance its tribological properties. Friction and wear tests were conducted under two conditions—dry sliding and oil lubrication—to systematically evaluate the influence of surface texturing on friction coefficients and wear behavior. The results demonstrate that laser-induced texturing significantly reduces both the coefficient of friction and the wear extent. Under dry sliding conditions, the textured surface reduced the friction coefficient by more than 40%, with a maximum wear rate reduction of 45.57%. In oil-lubricated environments, the wear reduction further increased to 48.59%. Mechanism analysis reveals that the hexagonal texture effectively retains lubricating oil, traps wear debris, and modulates contact stress distribution, collectively contributing to improved friction and wear resistance. This study highlights the synergistic effects of femtosecond laser-induced hexagonal textures through multiple mechanisms including lubrication retention, debris capture, and stress regulation and deepens the understanding of micro-texture-based strategies for enhancing the tribological performance of magnesium alloys.</p>

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Femtosecond Laser-Induced Hexagonal Surface Textures on Magnesium Alloy for Enhanced Friction and Wear Performance

  • 期刊论文

  • 发表日期：

    2026年5月19日

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  • Li Weipeng,
  • Yan Xiaoni,
  • Geng Nan,
  • Liu Yicong,
  • Yang Wei,
  • Cao Shengwei,
  • Guo Junde

摘要

To address the issues of rapid surface wear and poor frictional performance of magnesium alloys, this study employed femtosecond laser processing to fabricate regular hexagonal micro-textures on the surface of AZ31B magnesium alloy, aiming to enhance its tribological properties. Friction and wear tests were conducted under two conditions—dry sliding and oil lubrication—to systematically evaluate the influence of surface texturing on friction coefficients and wear behavior. The results demonstrate that laser-induced texturing significantly reduces both the coefficient of friction and the wear extent. Under dry sliding conditions, the textured surface reduced the friction coefficient by more than 40%, with a maximum wear rate reduction of 45.57%. In oil-lubricated environments, the wear reduction further increased to 48.59%. Mechanism analysis reveals that the hexagonal texture effectively retains lubricating oil, traps wear debris, and modulates contact stress distribution, collectively contributing to improved friction and wear resistance. This study highlights the synergistic effects of femtosecond laser-induced hexagonal textures through multiple mechanisms including lubrication retention, debris capture, and stress regulation and deepens the understanding of micro-texture-based strategies for enhancing the tribological performance of magnesium alloys.