Fabrication and Characterization of Silicon Carbide and Fly Ash Reinforced Aluminium Metal Matrix Hybrid Composites

Reddy, B. Ramgopal; Srinivas, Ch.

doi:10.1016/j.matpr.2017.11.531

Cited by 49 publications

(23 citation statements)

References 7 publications

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“…The stronger bonding between the matrix and particles and refinement of grains improved the impact strength of composites [ 18 ]. The inclusion of material inoculants, especially the SiO 2 , Al 2 O 3, has augmented the strength and damping characteristics of the metal matrix composites, particularly due to the coring and anisotropic grain boundary migration in the matrix phase [ 19 , 20 ]. Addition of phenoplasts provides systematically higher coefficients of friction and low wear rates, especially in the aluminum matrix composites [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Fly Ash Material Inoculants on the Tensile and Impact Characteristics of the Aluminum AA 5083/7.5SiC Composites

Santhosh

Nagegowda

Kumar³

et al. 2021

Materials

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The choice of suitable inoculants in the grain refinement process and subsequent enhancement of the characteristics of the composites developed is an important materials research topic, having wide scope. In this regard, the present work is aimed at finding the appropriate composition and size of fly ash as inoculants for grain refinement of the aluminum AA 5083 composites. Fly ash particles, which are by products of the combustion process in thermal power plants, contributing to the large-scale pollution and landfills can be effectively utilized as inoculants and interatomic lubricants in the composite matrix–reinforcement subspaces synthesized in the inert atmosphere using ultrasonic assisted stir casting setup. Thus, the work involves the study of the influence of percentage and size of the fly ash dispersions on the tensile and impact strength characteristics of the aluminum AA 5083/7.5SiC composites. The C type of fly ash with the particle size in the series of 40–75 µm, 76–100 µm, and 101–125 µm and weight % in the series of 0.5, 1, 1.5, 2, and 2.5 are selected for the work. The influence of fly ash as distinct material inoculants for the grain refinement has worked out well with the increase in the ultimate tensile strength, yield strength, and impact strength of the composites, with the fly ash as material inoculants up to 2 wt. % beyond which the tensile and impact characteristics decrease due to the micro coring and segregation. This is evident from the microstructural observations for the composite specimens. Moreover, the role of fly ash as material inoculants is distinctly identified with the X-Ray Diffraction (XRD) for the phase and grain growth epitaxy and the Energy Dispersive Spectroscopy (EDS) for analyzing the characteristic X-Rays of the fly ash particles as inoculant agents in the energy spectrum.

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Section: Introductionmentioning

confidence: 99%

Influence of the Fly Ash Material Inoculants on the Tensile and Impact Characteristics of the Aluminum AA 5083/7.5SiC Composites

Santhosh

Nagegowda

Kumar³

et al. 2021

Materials

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“…Reddy et al [8] developed SiC and Fly-ash reinforced aluminium metal matrix hybrid composites through by stir casting method to evaluate the mechanical characteristics like ultimate tensile strength, hardness and wear. Results depicted that hybrid composite had better mechanical properties than base metal.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Al 6061/Al2O3/Fly-Ash Composite Fabricated Through Stir Casting

Dwivedi¹,

Srivastava²,

Maurya³

et al. 2019

ACSM

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The fly-ash produced in thermal power plants is a major pollutant to the air and soil. This paper designs a new composite material with the fly-ash as the reinforcement. For the composite, the AA 6061 aluminum alloy was taken as the matrix, Al2O3 as the primary reinforcement, and fly-ash as the secondary reinforcement. The microstructure and mechanical properties of the proposed composite were measured, and compared with those of previous experiments on AA 6061 alloy. The results show that the proposed composite achieves uniform distribution of Al2O3 and fly-ash in AA 6061 alloy; the mechanical characteristics like tensile strength and hardness were improved after adding Al2O3 and flyash; however, ductility and facture toughness were minimized after the addition. The research findings offer a new way to recycle the fly-ash generated in the thermal power industry.

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“…This is due to the fact that hard SiC particles contribute more positively to the hardness of the hybrid composites. The increase in hardness is due to the hard SiC particles which act as a barrier for the movement of dislocation within the base matrix [25].The hardness and strength of the composites increased with the addition of reinforcement like SiC, Al2O3, TiB2, B4C, TiC etc. B4C provides more hardness and strength as compared to others [26].…”

Section: Results and Discussion 31 Studies On Hardness Testmentioning

confidence: 99%

STUDIES ON MECHANICAL AND WEAR BEHAVIOUR OF PARTICULATE REINFORCED MMCs

Prasat¹,

Hariharavibin²,

Karthick³

et al. 2018

IJETED

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Use of composites is increasing rapidly in automotive and aerospace applications. In the present industrial scenario, synthesis of Metal Matrix composites (MMCs) with superior wear and mechanical properties is of paramount importance. Researchers have conducted various investigations on MMCs with different reinforcement materials. Hardness test, compression test and wear test were conducted on MMCs with various reinforcement contents and unreinforced Aluminium. The results show an increase in hardness value and compression strength of reinforced MMCs when compared to unreinforced aluminium. The wear rate was also reduced with reinforced MMCs but whereas there was an increase in brittleness. It was also determined that at higher loads, the wear rate of composites increases. The surface roughness of the composites developed decreased with increase in the amount of reinforcement, compacting pressure and sintering temperature.

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Fabrication and Characterization of Silicon Carbide and Fly Ash Reinforced Aluminium Metal Matrix Hybrid Composites

Cited by 49 publications

References 7 publications

Influence of the Fly Ash Material Inoculants on the Tensile and Impact Characteristics of the Aluminum AA 5083/7.5SiC Composites

Influence of the Fly Ash Material Inoculants on the Tensile and Impact Characteristics of the Aluminum AA 5083/7.5SiC Composites

Microstructure and Mechanical Properties of Al 6061/Al2O3/Fly-Ash Composite Fabricated Through Stir Casting

STUDIES ON MECHANICAL AND WEAR BEHAVIOUR OF PARTICULATE REINFORCED MMCs

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