Characterization of Al-Si Alloy Reinforced with B4C and TiO2 Nanoparticles

Dinesh Kumar, P. K.; Darius Gnanaraj, S.

doi:10.1007/s12633-024-03012-w

Silicon

2024

DOI: 10.1007/s12633-024-03012-w

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Characterization of Al-Si Alloy Reinforced with B4C and TiO2 Nanoparticles

P. K. Dinesh Kumar,

S. Darius Gnanaraj

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2024

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Cited by 5 publications

References 32 publications

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An RSM modelling and optimization of mechanical behaviour of AlSi12CuNiMg-micro/nano B4C composites through two-step stir-casting

Prasad,

Prakash,

Kishorekumar

et al. 2024

Multiscale and Multidiscip. Model. Exp. and Des.

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An RSM modelling and optimization of mechanical behaviour of AlSi12CuNiMg-micro/nano B4C composites through two-step stir-casting

Prasad,

Prakash,

Kishorekumar

et al. 2024

Multiscale and Multidiscip. Model. Exp. and Des.

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Synergistic effects of boron carbide and niobium reinforcements on the mechanical performance of Al-8090 alloys

Meenuga,

Birru,

Pulisheru

et al. 2024

Mater. Res. Express

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This experimental study investigates the impact of boron carbide (B4C) and Niobium (Nb) reinforcement particles on the microstructural, mechanical and surface properties of Al-8090 base alloy. The inclusion of B4C and Nb particles significantly refines the structure which enhances the properties via nucleation and dispersion strengthening effects. Optical microstructures and Scanning Electron Microscopy images show that an increase in reinforcement percentages precedes finer grains and uniform particle distribution. Energy Dispersive X-ray Spectroscopy analysis highlights a predominant aluminium (Al) peak in the Al-8B4C-5Nb sample and Nb and Fe minor peaks indicate potential diffusion interaction. Mechanical tests reveal substantial improvements in hardness, tensile strength, and density of the Al-7B4C-3Nb sample obtained the highest values. However, increasing reinforcement content causes agglomeration which declines the hardness and increases porosity. The wear test demonstrates that the reinforced composites perform superior properties, with B4C providing surface layer protection and Nb refining the grain structure. Corrosion analysis reveals that inclusion reinforcements act as initiation sites for intergranular and localized corrosion due to the galvanic interaction effect. These findings recommend that an optimized reinforcement content in Al-8090 base alloy yields better mechanical performance and wear resistance for high-strength applications.

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Comparative tribological study of the material intended for a lightweight HAMNC brake rotor sliding against NAO brake pad material

Dinesh Kumar,

Darius Gnanaraj

2024

Eng. Res. Express

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The present work studies the lightweight Hybrid Aluminium Metal Matrix Nanocomposite (HAMNC) for brake rotor application. The novel HAMNC brake rotor material is fabricated by reinforcing 1 wt. % nano Boron carbide (nB4C) and 0.75 wt.% nano Titanium dioxide (nTiO2) employing ultrasonic-squeeze-assisted stir-casting process. The developed HAMNC and a commercial Gray Cast Iron (GCI) brake rotor material was subjected to density, hardness, thermal, corrosion, and tribological studies. The results indicated that the HAMNC brake rotor material is 60% lighter and extremely corrosive resistant compared with GCI material. Also, the dry sliding wear study done using Non Asbestos Organic (NAO) commercial brake pad as the pin material exhibited that the HAMNC brake rotor material possessed a higher wear-resistant behavior compared to GCI.

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Characterization of Al-Si Alloy Reinforced with B4C and TiO2 Nanoparticles

Cited by 5 publications

References 32 publications

An RSM modelling and optimization of mechanical behaviour of AlSi12CuNiMg-micro/nano B4C composites through two-step stir-casting

An RSM modelling and optimization of mechanical behaviour of AlSi12CuNiMg-micro/nano B4C composites through two-step stir-casting

Synergistic effects of boron carbide and niobium reinforcements on the mechanical performance of Al-8090 alloys

Comparative tribological study of the material intended for a lightweight HAMNC brake rotor sliding against NAO brake pad material

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