A Study on the Al2O3 reinforced Al7075 Metal Matrix Composites Wear behavior using Artificial Neural Networks

Pramod, R.; Kumar, G. B. Veeresh; Gouda, P.S. Shivakumar

doi:10.1016/j.matpr.2018.02.105

Cited by 42 publications

(17 citation statements)

References 39 publications

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“…As the alumina particulates of average 150m varying from 2% to 6% and wear rate were investigated. The experimental investigations revealed that loss of material increased with increase in load applied and sliding distance [1]. In case of 10%, 15% and 20% weight percentage variation of Al2O3 by varying speed and feed rate.…”

Section: Introductionmentioning

confidence: 92%

Prediction of Temperature During Machinability of Al2O3 Reinforced Al7075

Krishna¹,

Shankar²,

Muniyappa³

et al. 2020

RCMA

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Metal matrix composite Al2O3 particle reinforced Al have become useful engineering materials due to their properties such as low cost, wear-resistant, heat-resistant and low weight. The present study focused on prediction of temperature produced during machining of Al2O3 reinforced with Al7075. In this investigation the percentage of Al2O3 (mesh size of 100-300)was varied 1%, 3%, 5%, 7% and 9% to the base material of Al7075. The temperature was measured using thermal gun at machining tip of the tool at which maximum temperature were measured by varying operational parameters such as depth of cut (0.25, 0.5, 0.75, 1 and 1.25mm), spindle speed (80, 112, 140, 200 and 355rpm) and feed rate (0.10, 0.12, 0.16, 0.2 and 0.25mm/sec). Experimental results revels that the temperature increases with increase in feed rate and depth, whereas, in case of spindle speed there is a fluctuation in temperature for all the combinations considered. The percentage contribution of operational parameters on temperature was determined using ANOVA analysis. Overall analyses for all the combination considered shows that feed rate (45.07%), depth (33.75%) and spindle speed (5.2%) on temperature. The developed models with a P-value are less than 0.05 were considered to be a statistically significant with 95% of confidence interval. A good agreement between experimental and statistical modeling were achieved and comparison of experimental and statistical analysis were drawn.

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Section: Introductionmentioning

confidence: 92%

Prediction of Temperature During Machinability of Al2O3 Reinforced Al7075

Krishna¹,

Shankar²,

Muniyappa³

et al. 2020

RCMA

View full text Add to dashboard Cite

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“…As a vital component of MMCs, the reinforcing phase should meet the following conditions: good mechanical and functional properties as well as fine chemical stability and affinity with the metal matrix. Traditional reinforcing phases are mainly composed of carbides [ 2 , 3 ], metal oxides [ 4 , 5 ], nitrides [ 6 , 7 ], borides [ 8 , 9 ], and so on. In recent years, novel kinds of reinforcing phases, such as fullerene, carbon nanotubes, and graphene, have attracted widespread attention.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Strengthening of Graphene/Aluminum Composites through Point Defects: A First-Principles Study

Wang

2021

Nanomaterials

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The relationship between point defects and mechanical properties has not been fully understood yet from a theoretical perspective. This study systematically investigated how the Stone–Wales (SW) defect, the single vacancy (SV), and the double vacancy (DV) affect the mechanical properties of graphene/aluminum composites. The interfacial bonding energies containing the SW and DV defects were about twice that of the pristine graphene. Surprisingly, the interfacial bonding energy of the composites with single vacancy was almost four times that of without defect in graphene. These results indicate that point defects enhance the interfacial bonding strength significantly and thus improve the mechanical properties of graphene/aluminum composites, especially the SV defect. The differential charge density elucidates that the formation of strong Al–C covalent bonds at the defects is the most fundamental reason for improving the mechanical properties of graphene/aluminum composites. The theoretical research results show the defective graphene as the reinforcing phase is more promising to be used in the metal matrix composites, which will provide a novel design guideline for graphene reinforced metal matrix composites. Furthermore, the sp3-hybridized C dangling bonds increase the chemical activity of the SV graphene, making it possible for the SV graphene/aluminum composites to be used in the catalysis field.

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“…The most valid reason for the failure of various machine components is 'wear'. A study of wear characterization on Al6061-Al 2 O 3 composites showed remarkable wear resistance in dry sliding wear processes [12]. It has been clearly observed that the temperature has a significant effect on the wear rate (WR) of composite Al6061-silicon carbide (SiC), and it has been shown that this particular property is reduced with an increase in the applied load [13].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Tribological Characteristics of Aluminum 6061-Reinforced Titanium Carbide Metal Matrix Composites

et al. 2021

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The current trend in the materials engineering sector is to develop newer materials that can replace the existing materials in various engineering sectors in order to be more and more efficient. Therefore, the present research work is aimed at fabricating and determining the physical, mechanical, and dry sliding wear properties of titanium carbide (TiC)-reinforced aluminum alloy (Al6061) metal matrix composites (MMCs). For the study, the Al6061-TiC microparticle-reinforced composites were fabricated via the liquid metallurgy route through the stir casting method, where the reinforcement of the TiC particles into the Al6061 alloy matrix was added in the range of 0 to 8.0 wt.%, i.e., in the steps of 2.0 wt.%. The synthesis procedure followed the investigation of the various mechanical properties of Al6061-TiC MMCs, such as the density and structure, as well as mechanical and dry wear experimentation. The tests performed on the casted Al6061, as well as its TiC composites, were in harmony with ASTM standards. As per the experimental outcome, it can be confirmed that the increase in the weight percentage of TiC into the Al6061 alloy substantially increases the density, hardness, and tensile strength, at the expense of the percentage of elongation. In addition, the dry wear experiments, performed on a pin-on-disc tribometer, showed that the Al6061-TiC MMCs have superior wear-resistance properties, as compared to those of pure Al6061 alloy. Furthermore, optical micrograph (OM), powdered X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), and scanning electron microscopy (SEM) analyses were employed for the developed Al6061-TiC MMCs before and after the fracture and wear test studies. From the overall analysis of the results, it can be observed that the Al6061-TiC composite material with higher TiC reinforcement displays superior mechanical characteristics.

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A Study on the Al2O3 reinforced Al7075 Metal Matrix Composites Wear behavior using Artificial Neural Networks

Cited by 42 publications

References 39 publications

Prediction of Temperature During Machinability of Al2O3 Reinforced Al7075

Prediction of Temperature During Machinability of Al2O3 Reinforced Al7075

Interfacial Strengthening of Graphene/Aluminum Composites through Point Defects: A First-Principles Study

Investigation of the Tribological Characteristics of Aluminum 6061-Reinforced Titanium Carbide Metal Matrix Composites

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