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<p>Magnesium alloy is a lightweight material widely utilized in aerospace, automotive, and structural sectors. However, its inherent drawback lies in its limited mechanical and wear resistance properties. Hence, the present study is conducted to investigate the influence of multiwall carbon nanotube particles on the microstructural, mechanical, and wear behavior of Mg nanocomposites. A specialized stir-squeeze casting method, complemented by ultrasonication, was employed for composite fabrication. Optical microscopy and high-resolution scanning electron microscopy confirmed the homogeneous distribution of nanoparticles within the Mg matrix. x-ray diffraction analysis verified the presence of nanoparticles and intermetallic phases, indicating thermal stability. Compared to the base alloy, the nanocomposites AC0.5, AC1, and AC1.5 exhibited significant improvements in hardness by 21, 49, and 37%; tensile strength by 8, 18, and 13%; compression strength by 6, 15, and 9%; and impact resistance by 3, 7, and 5%, respectively. Tribological properties were assessed using a pin-on-disk tribometer with an L16 orthogonal array. ANOVA showed that load was the most significant factor (58%), followed by sliding velocity (20%), sliding distance (12%), and temperature (10%). Adding 1% weight of MWCNT to the alloy improved the wear rate, coefficient of friction, wear depth, and surface roughness by 11%, 60, 12, and 59%, respectively.</p>

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Effect of Multiwall Carbon Nanotube Reinforcement on the Microstructural, Mechanical, and Wear Properties of Magnesium Nanocomposites for Lightweight Aerospace and Automotive Components

  • 期刊论文

  • 发表日期：

    2025年10月10日

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  • Veera Prabakaran Elanjeitsenni,
  • Prasanna Naveen Kumar Jeyaraman,
  • Senthil Vadivu Kulandhaivelu,
  • S. C. Vettivel

摘要

Magnesium alloy is a lightweight material widely utilized in aerospace, automotive, and structural sectors. However, its inherent drawback lies in its limited mechanical and wear resistance properties. Hence, the present study is conducted to investigate the influence of multiwall carbon nanotube particles on the microstructural, mechanical, and wear behavior of Mg nanocomposites. A specialized stir-squeeze casting method, complemented by ultrasonication, was employed for composite fabrication. Optical microscopy and high-resolution scanning electron microscopy confirmed the homogeneous distribution of nanoparticles within the Mg matrix. x-ray diffraction analysis verified the presence of nanoparticles and intermetallic phases, indicating thermal stability. Compared to the base alloy, the nanocomposites AC0.5, AC1, and AC1.5 exhibited significant improvements in hardness by 21, 49, and 37%; tensile strength by 8, 18, and 13%; compression strength by 6, 15, and 9%; and impact resistance by 3, 7, and 5%, respectively. Tribological properties were assessed using a pin-on-disk tribometer with an L16 orthogonal array. ANOVA showed that load was the most significant factor (58%), followed by sliding velocity (20%), sliding distance (12%), and temperature (10%). Adding 1% weight of MWCNT to the alloy improved the wear rate, coefficient of friction, wear depth, and surface roughness by 11%, 60, 12, and 59%, respectively.