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<p>Metal matrix composites (MMCs) have high strength, wear resistance and thermal stability of automotive and aerospace components, especially pistons. Conventional metal matrix composites have disadvantages; however, their ductility is lower, they cannot be machined, reinforcements are not uniformly distributed, interfacial bonding is weak, they are anisotropic, and they are costly to manufacture. The research explores the behavior of fatigue and corrosion resistance of boron carbide (B<sub>4</sub>C) and multi-walled carbon nanotubes (MWCNT) reinforced aluminum alloy composites (AA6061 + B<sub>4</sub>C + MWCNT). The novelty is associated with attaining uniform nanoscale and microscale reinforcement dispersion, enhanced interfacial bonding by controlled preheating and synergizing fatigue strength and corrosion resistance. The first stirring stage is done with preheated reinforcements to be dispersed and then high-speed dispersion in the semi-solid form is done to reduce the possibility of clustering and achieve a uniform distribution. The evaluation of the performance is achieved through simulation in MATLAB and comparison with the existing composites. The final tensile strength is enhanced to 150&#xa0;MPa (base alloy) to 170&#xa0;MPa with single and 180&#xa0;Mpa with the hybrid composite, and the yield strength is enhanced to 135&#xa0;MPa. The suggested solution offers scalable fabrication route and high-level durability improvement to advanced lightweight applications.</p>

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Fatigue and corrosion behavior of boron carbide and multiwalled carbon nanotubes reinforced with aluminum alloy composites

  • 期刊论文

  • 发表日期：

    2026年5月28日

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  • A. Anu Kuttan,
  • Ankush Balajirao Khansole,
  • Ismail Kakaravada,
  • Keerthivasan Navaneethakrishnan,
  • Bhagavatula Lakshmipathi Raju,
  • Kodanda Ramarao Chebattina

摘要

Metal matrix composites (MMCs) have high strength, wear resistance and thermal stability of automotive and aerospace components, especially pistons. Conventional metal matrix composites have disadvantages; however, their ductility is lower, they cannot be machined, reinforcements are not uniformly distributed, interfacial bonding is weak, they are anisotropic, and they are costly to manufacture. The research explores the behavior of fatigue and corrosion resistance of boron carbide (B4C) and multi-walled carbon nanotubes (MWCNT) reinforced aluminum alloy composites (AA6061 + B4C + MWCNT). The novelty is associated with attaining uniform nanoscale and microscale reinforcement dispersion, enhanced interfacial bonding by controlled preheating and synergizing fatigue strength and corrosion resistance. The first stirring stage is done with preheated reinforcements to be dispersed and then high-speed dispersion in the semi-solid form is done to reduce the possibility of clustering and achieve a uniform distribution. The evaluation of the performance is achieved through simulation in MATLAB and comparison with the existing composites. The final tensile strength is enhanced to 150 MPa (base alloy) to 170 MPa with single and 180 Mpa with the hybrid composite, and the yield strength is enhanced to 135 MPa. The suggested solution offers scalable fabrication route and high-level durability improvement to advanced lightweight applications.