Fabrication and characterization of Al6063/SiC composites

Kamboj, Abhishek; Kumar, Sudhir; Singh, Hari

doi:10.1177/0954405413493618

Cited by 16 publications

(7 citation statements)

References 12 publications

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“…These composites possessed a higher friction coefficient and lower density compared with monolithic materials such as grey cast iron and Ti-6Al-4V alloy. A composite of AA6063/SiC was fabricated by Kamboj et al [10] using the stir casting process and its mechanical properties were analyzed. An improvement of 47.3% in ultimate tensile strength (UTS), 50% in hardness and 60% in impact strength over the metal alloy were reported.…”

Section: Introductionmentioning

confidence: 99%

Taguchi Grey Relational Analysis for Multi-Response Optimization of Wear in Co-Continuous Composite

2018

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Co-continuous composites have potential in friction and braking applications due to their unique tribological characteristics. The present study involves Taguchi grey relational analysis-based optimization of wear parameters such as applied load, sliding speed and sliding distance, and their effect on dry sliding wear performance of AA6063/SiC co-continuous composite manufactured by gravity infiltration. A Taguchi L9 orthogonal array was designed and nine experimental runs were performed based on the designed experiments. The coefficient of wear and specific wear rate were recorded for each experiment. Based on the average responses computed from Taguchi grey relational analysis, an applied load of 60 N, sliding speed of 1 m/s and sliding distance of 1000 m were estimated to be the optimal parameters. An Analysis of Variance (ANOVA) was conducted to identify the predominant factor and established all the three factors as being significant. The sliding distance was found to have the highest significant influence of 61.05% on the wear of the C4 composite. Confirmation experiments conducted using the optimal parameters indicated an improvement of 35.25% in grey relational grade. Analysis of the worn surfaces of the confirmation experiment revealed adhesive and abrasive wear as the governing mechanisms.

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Section: Introductionmentioning

confidence: 99%

Taguchi Grey Relational Analysis for Multi-Response Optimization of Wear in Co-Continuous Composite

2018

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“…It is visible that the maximum hardness is accomplished when the stirring period rises from 2 minutes to 4 minutes. As also mentioned in the literature, composites' hardness values decrease under and below the optimum recovery period [16]. It can be suggested that the amount of porosity in the com- Figure 10, the SEM images show the porosity in the composites manufactured at 750 °C and 500 rev/min stirring speed with 6% SiC reinforcement volume ratio, in 2, 4 and 6 minutes.…”

Section: Resultsmentioning

confidence: 58%

An Investigation of Abrasive Wear Behaviour of Al 2014-SiC Composites

Calin

Cilasun

2015

High Temperature Materials and Processes

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In this study, the effects of SiC reinforcement volume fractions on hardness, porosity and abrasive wear behaviour were examined in Al 2014-SiC (<92.3 μm) reinforced metal matrix composites (MMCs) of 3%, 6% and 12% reinforcement-volume (R-V) ratios produced by meltstirring. Abrasive wear tests were carried out by 320 mesh Al 2 O 3 abrasive paper and a pin-on-disc wear test apparatus, under 10N, 20N and 30N load, and at 0.2 ms −1 sliding speed. The same specimens were tested by 150, 240 and 320 mesh abrasive paper at 0.2 ms −1 sliding speed, under 10N, 20N and 30N load. After the tests, the microstructures of the worn surfaces were examined with scanning electron microscope (SEM) studies and EDS analyses. Besides, the amount of hardness and porosity of the specimens were identified. It was recorded that the amounts of hardness and porosity increases as the SiC reinforcement in the composite increases. The highest amount of abrasive wear was recorded in the specimens with 3% reinforcements. It was identified that the amount of abrasive wear decreases while the SiC reinforcement in the composite structure increases by volume, and that the amount of porosity and reinforcement volume (R-V) ratio are important parameters in abrasive wear.

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“…Sample 3 with 15% SiC shows a maximum hardness value (Vickers hardness number) of 120, ultimate tensile strength of 190 MPa and impact strength of 18 J. 16…”

Section: Literature Reviewmentioning

confidence: 99%

“…The percentage error between experimental and predicted results for MRR and SR were less than 4%. 15 Kamboj et al 16 fabricated 5%, 10% and 15% SiC composites with aluminum alloy using stir casting process. The samples were investigated using scanning electron microscope (SEM) equipped with energy dispersive X-ray analysis system, X-ray diffraction analysis and differential thermal analysis (DTA) techniques.…”

Section: Introductionmentioning

confidence: 99%

“…Sample 3 with 15% SiC shows a maximum hardness value (Vickers hardness number) of 120, ultimate tensile strength of 190 MPa and impact strength of 18 J. 16 Singh et al 17 optimized the input process parameters considering assigned weight fraction of output quality characteristics using gray relational analysis. The output quality characteristics considered were thrust force, torque and SR under the experimental domain of cutting speed, feed, step diameter and point angle.…”

Section: Introductionmentioning

confidence: 99%

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An investigation on effects of wire electrical discharge machining parameters on surface roughness of newly developed hybrid metal matrix composite

Lal

Kumar²,

Khan

et al. 2013

Proceedings of the Institution of Mechanical Engineers, Part B:

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This article investigated the effect of wire electrical discharge machining process parameters such as pulse on time, pulse off time, pulse current and the wire drum speed on the surface roughness of machined hybrid metal matrix composite. The hybrid composite was prepared by inert gas–assisted electromagnetic stir casting process using 15 wt% Al2O3/SiC particulates (7.5% each) in metal matrix Al-7075 alloy. Taguchi method was used for parameter optimization, and the level of importance was determined using analysis of variance. The MINITAB15 software was used in the analysis. The results show that pulse on time, pulse current and pulse off time were significant parameters, whereas the wire drum speed had insignificant effect. In confirmation test, the average experimental value of surface roughness was within an error of 3.46% of the predicted value at the optimum level of process parameters.

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Fabrication and characterization of Al6063/SiC composites

Cited by 16 publications

References 12 publications

Taguchi Grey Relational Analysis for Multi-Response Optimization of Wear in Co-Continuous Composite

Taguchi Grey Relational Analysis for Multi-Response Optimization of Wear in Co-Continuous Composite

An Investigation of Abrasive Wear Behaviour of Al 2014-SiC Composites

An investigation on effects of wire electrical discharge machining parameters on surface roughness of newly developed hybrid metal matrix composite

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