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Friction Stir Spot Welding (FSSW) holds promise for fabricating metal matrix composites, especially by incorporating nanoparticles into an aluminum matrix. This study explores the influence of different nanoparticle reinforcements on the mechanical properties of Al composites joined using Swept FSSW. SiC and Al2O3 particles strategically placed within a mechanized groove undergo SFSSW. The distribution and size of particles within the friction stir-processed zone are meticulously examined through optical and scanning electron microscopy. Regardless of particle type and SFSSW strategy, a consistent increase in lap shear strength compared to the weld without particle reinforcements is observed. Additionally, a significant improvement in joint strength is noted when SiC particles are employed, while this effect is not evident with Al2O3.

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Improving Composite Joints with Nanoparticles Through Friction Stir Spot Welding on AA6061-T6

  • 会议论文

  • 发表日期：

    2025年

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  • S. Suresh,
  • J. Balaji,
  • D. Velmurugan,
  • Elango Natarajan,
  • S. Sudhagar,
  • R. Elayaraja

摘要

Friction Stir Spot Welding (FSSW) holds promise for fabricating metal matrix composites, especially by incorporating nanoparticles into an aluminum matrix. This study explores the influence of different nanoparticle reinforcements on the mechanical properties of Al composites joined using Swept FSSW. SiC and Al2O3 particles strategically placed within a mechanized groove undergo SFSSW. The distribution and size of particles within the friction stir-processed zone are meticulously examined through optical and scanning electron microscopy. Regardless of particle type and SFSSW strategy, a consistent increase in lap shear strength compared to the weld without particle reinforcements is observed. Additionally, a significant improvement in joint strength is noted when SiC particles are employed, while this effect is not evident with Al2O3.