Effect of tungsten carbide, silicon carbide and graphite particulates on the mechanical and microstructural characteristics of AA 5052 hybrid composites

Dhas, D. S. Ebenezer Jacob; Velmurugan, C.; Wins, K. Leo Dev; Boopathiraja, K.P.

doi:10.1016/j.ceramint.2018.09.216

Cited by 49 publications

(17 citation statements)

References 27 publications

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“…9 Due to the simplicity, flexibility, availability, lower cost and capacity to generate bulk volume material, stir casting technique has been demonstrated to be an effective measure for developing composites with minimum mechanical defects. 10…”

Section: Introductionmentioning

confidence: 99%

“…Email: nikhilbharat@student.nitw.ac.in capacity to generate bulk volume material, stir casting technique has been demonstrated to be an effective measure for developing composites with minimum mechanical defects. 10 According to Morteza Alizadeh, 11 the key causes for improvement in the strength of manufactured Al + B 4 C nanocomposites are the development of the grain structure, creation of finer grains and high dislocation density. Carneiro and Simões 12 showed that by increasing the weight percent of reinforcement, the high angle grain boundary (HAGB) also enhanced and that led to decrease in the grain size of the composite.…”

Section: Introductionmentioning

confidence: 99%

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Influence of nano-TiO₂ particles on the microstructure, mechanical and wear behaviour of AA7178 alloy matrix fabricated by stir casting technique

Bharat

Bose

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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The current study focuses on the influence of varying wt% of nano-TiO2 particles (1%, 2% and 3%) on the microstructure, mechanical and tribological properties of AA7178 alloy matrix composite produced by stir casting method. The grain boundaries of the prepared composites were revealed using an optical microscope. The uniform distribution of nano-TiO2 particles in the alloy matrix was observed by scanning electron microscope. X-ray diffraction verified the existence of reinforced nano-TiO2 particulates in the samples, and microstructural images revealed a consistent distribution of reinforcements in the matrix. The formation of more refined grains from coarser grains was observed using electron backscatter diffraction analysis. The texture analysis revealed the presence of dominant A and A2* components with a maximum intensity of 5.137. Fractography disclosed that the reinforcements did not peel away from the alloy matrix, and the form of failure was both brittle and ductile. Abrasive wear was observed for the worn-out surface of the nanocomposites. It was observed that by increasing wt% of TiO2 nanoparticles, the mechanical and tribological properties of the alloy matrix increased compared to the base alloy. The optimum mechanical and tribological properties were obtained at 2 wt% of nano-TiO2 particulates.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of nano-TiO₂ particles on the microstructure, mechanical and wear behaviour of AA7178 alloy matrix fabricated by stir casting technique

Bharat

Bose

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…The hardness and porosity were found to be increased whereas the density was decreased when increases the volume fraction of RHA in AMCs [7,13]. The use of tungsten carbide concentration 10% and graphite concentration 5% in AA5052 matrix resulted in increased impact strength, TS and hardness [14]. Atla Sridhar et al [15] and A. Baradeswaran et al [16] reported that, increases the graphite content in AA7075 hybrid composites increase the wear resistance and decrease the coefficient of friction (CF) and simultaneously reduce the hardness.…”

Section: Introductionmentioning

confidence: 94%

Finding the optimum concentration of silicon carbide and graphite particles on the tensile strength, hardness and wear properties of aluminium matrix composites by RSM approach

Bakkiyaraj¹

2021

Surf. Topogr.: Metrol. Prop.

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The present investigation aims to determine the optimum concentration of SiC and graphite reinforcements in AA7075 matrix based hybrid composites to obtain better tensile strength, hardness, coefficient of friction and wear rate using RSM. Reinforcement particles of SiC varied from 5% to 15% whereas graphite particles varied from 3% to 7% in the AA7075 matrix. A central composite design of RSM was adopted to develop the numerical model, and the statistical data were derived using analysis variances to evaluate adequacy of the model. Meanwhile, the conformity test has been conducted to validate the developed numerical model. Following this, the output responses of the optimized conditions were taken into account for the characterization of microstructure, fractured surface, and worn surface characters using optical microscope, and scanning electron microscope. The effect of SiC and graphite particles on the tensile strength, hardness, and wear properties and its result were reported in detail along with comparison of previous researchers.

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“…Graphite has a soft texture and should not wear; silicon carbide has a hard texture, and can increase the hardness and strength of composite materials. 14,15 Therefore, the composite of graphite and silicon carbide can be used to produce a wave-absorbing material with good wear resistance, dielectric loss and conductive loss, and a wide absorption band. Sun et al fabricated graphitedoped silicon carbide ceramics with a net-like structure by tape casting and pressureless sintering.…”

mentioning

confidence: 99%

Preparation of single-layer coating polyester cotton composites with electric loss of their electromagnetic properties

Liu

Wang

Yin

2021

Textile Research Journal

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In this paper, single-layer coated polyester–cotton composites were prepared using PU-2540 waterborne polyurethane resin as the adhesive, graphite and silicon carbide as functional particles, and adopting a coating technology on the plain polyester–cotton fabric. First, the single-layer graphite-coated polyester cotton composite was prepared with graphite as the functional particle, and the influence of graphite content on the reflection loss and shielding effectiveness was studied. When the applied electric field frequency is 1610 MHz and the graphite content is 40 wt%, the minimum reflection loss is −26 dB; when the applied electric field frequency is 39.9 MHz and the graphite content is 50 wt%, the maximum shielding effectiveness is 12 dB. Then the single-layer silicon carbide-coated polyester–cotton composite was prepared with silicon carbide as the functional particle, and the influence of silicon carbide content on the reflection loss and shielding effectiveness was studied. With the applied electric field in the range 500∼3000 MHz, the greater the content of silicon carbide, the smaller the reflection loss, the better the wave-absorbing ability, the larger the shielding effectiveness, and the better the shielding performance. Finally, the single-layer graphite/silicon carbide-coated polyester–cotton composites were prepared by doping graphite and silicon carbide in different proportions, and the influence of doping ratio on dielectric properties, reflection loss, and shielding effectiveness was investigated. The real part of the dielectric constant of the material was highest – that is, the polarization ability of the material was best when there were only graphite particles in the doping medium and the silicon carbide content was 0. The imaginary part of the dielectric constant and the tangent of loss angle of the material were the highest – that is, the loss and attenuation ability of the material were best – when the doping ratio of graphite to silicon carbide is 4:1. With the applied electric field in the range 500∼3000 MHz, and with increasing graphite content, the reflection loss of the material became smaller, showing an enhanced wave-absorbing property, and the shielding effectiveness of the material increased, showing an enhanced shielding performance.

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Effect of tungsten carbide, silicon carbide and graphite particulates on the mechanical and microstructural characteristics of AA 5052 hybrid composites

Cited by 49 publications

References 27 publications

Influence of nano-TiO₂ particles on the microstructure, mechanical and wear behaviour of AA7178 alloy matrix fabricated by stir casting technique

Influence of nano-TiO₂ particles on the microstructure, mechanical and wear behaviour of AA7178 alloy matrix fabricated by stir casting technique

Finding the optimum concentration of silicon carbide and graphite particles on the tensile strength, hardness and wear properties of aluminium matrix composites by RSM approach

Preparation of single-layer coating polyester cotton composites with electric loss of their electromagnetic properties

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Effect of tungsten carbide, silicon carbide and graphite particulates on the mechanical and microstructural characteristics of AA 5052 hybrid composites

Cited by 49 publications

References 27 publications

Influence of nano-TiO2 particles on the microstructure, mechanical and wear behaviour of AA7178 alloy matrix fabricated by stir casting technique

Influence of nano-TiO2 particles on the microstructure, mechanical and wear behaviour of AA7178 alloy matrix fabricated by stir casting technique

Finding the optimum concentration of silicon carbide and graphite particles on the tensile strength, hardness and wear properties of aluminium matrix composites by RSM approach

Preparation of single-layer coating polyester cotton composites with electric loss of their electromagnetic properties

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Influence of nano-TiO₂ particles on the microstructure, mechanical and wear behaviour of AA7178 alloy matrix fabricated by stir casting technique

Influence of nano-TiO₂ particles on the microstructure, mechanical and wear behaviour of AA7178 alloy matrix fabricated by stir casting technique