Application of factorial techniques to study the wear of Al hybrid composites with graphite addition

Ravindran, Parag; Manisekar, K.; Narayanasamy, P.; Selvakumar, N.; Narayanasamy, R.

doi:10.1016/j.matdes.2012.02.013

Cited by 183 publications

(91 citation statements)

References 21 publications

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“…These results indicated the presence of aluminum in the large peaks, and silicon carbide and graphite particles in the minor peaks (in hybrid composites). A number of studies have been carried out for developing Al composites reinforced with SiC and Gr particles, and a homogeneous structure of Al/ SiC/Gr composites was obtained [49][50][51][52][53]. A gradual (marginal) shift of Al peaks to high angles with an increase in the wt.% of the Gr particles was also evident.…”

Section: Microstructural Featuresmentioning

confidence: 98%

“…3 represent Gr particles or the pores formed upon polishing the surface. The Gr particles are solid lubricant particles that are abraded easily during polishing of the hybrid composites and reduce the friction coefficient [50][51][52].…”

Section: Microstructural Featuresmentioning

confidence: 99%

“…In another study conducted by Ravinderan et al [52], the influence of increased Gr contents on the microstructural characteristics of Al2024/SiC/Gr hybrid composites was studied. Metallographic specimens were fabricated by using powder metallurgy.…”

Section: Microstructural Featuresmentioning

confidence: 99%

“…Graphite is a solid lubricant that facilitates the movement and rearrangement of reinforcement particles in the matrix alloy. Therefore, increasing Gr contents in the hybrid contents is considered favorable for achieving minimum porosity [52].…”

Section: Density and Hardnessmentioning

confidence: 99%

“…It is the ratio of the frictional force between two surfaces and the normal force pressing them together. Friction in the rubbing surfaces results from the adhesion and plowing of the wear surfaces [50,52]. The friction coefficient generally decreases with increasing Gr contents in the Al/SiC/Gr composites.…”

Section: Friction Coefficientmentioning

confidence: 99%

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Fabrication characteristics and tribological behavior of Al/SiC/Gr hybrid aluminum matrix composites: A review

Singh

2016

Friction

112

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Improvement in surface properties and retainment of bulk properties are essential requirements for the design of components for wear resistance applications. This paper summarizes various features of Al/SiC/Gr hybrid composites that can be employed in different tribological applications. The study has revealed that the processing route plays a significant role in obtaining a homogeneous structure of these composites. In powder metallurgy, the selection of sizes of the matrix and reinforcement powders is crucial, whereas the wettability between the reinforcement particles and molten alloy is a major challenge in liquid metallurgy. The incorporation of SiC particles increases the mechanical strength and wear performance of Al composites. However, ejection of these particles can reduce the wear performance of Al composites under severe conditions. The addition of Gr particles helps in the formation of a thick and extensive tribolayer on the wear surface. This layer reduces direct contact between the rubbing surfaces, thereby decreasing the wear rate under certain conditions. Morphological analysis of worn surfaces has confirmed that the hybrid composites exhibit superior wear properties than the pure Al alloy and the ceramic-reinforced composite. However, increase in the Gr content beyond a limiting value can deteriorate the tribological properties of these composites. Therefore, true optimization of a tribosystem (of the hybrid composite and counterface) can be achieved by selecting appropriate reinforcement contents.

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Section: Microstructural Featuresmentioning

confidence: 98%

Section: Microstructural Featuresmentioning

confidence: 99%

Section: Microstructural Featuresmentioning

confidence: 99%

Section: Density and Hardnessmentioning

confidence: 99%

Section: Friction Coefficientmentioning

confidence: 99%

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Fabrication characteristics and tribological behavior of Al/SiC/Gr hybrid aluminum matrix composites: A review

Singh

2016

Friction

112

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Abrasive wear behavior of various reinforced AA6061 matrix composites produced with hot pressing process: A comparative study

Ovalı

2017

Materialwissenschaft Werkst

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The effects of various reinforcements (boron carbide -silicon carbide-alumina) with constant volume fraction (20 %) on the abrasive wear properties of AA6061 matrix composites produced with hot pressing process were investigated. The wear tests were carried out using a pin-on-disk wear tester by sliding at sliding speeds of 1.2 m/s against silicon carbide paper. Applied normal loads have 5, 10 and 15 N magnitude at room temperature. The wear morphologies of the worn surfaces were analyzed using a scanning electron microscope in order to examine the wear characteristics and to investigate the wear mechanisms. The effects of reinforcement type on the wear behavior of AA6061 matrix composites were observed. Results exhibited that the optimum wear resistance obtained with the boron carbide reinforced composite parts. All reinforced samples showed better wear resistance compared to as-received samples in all the studied conditions. Scanning electron microscope characterization showed that test specimens have complex combination of wear mechanisms on the worn surface. Keywords: Composite, wear / AA6061 / boron carbide / silicon carbide / alumina Die Wirkungen verschiedener Verstä rkungen (Borcarbid -Siliziumkarbid -Aluminiumoxid) mit konstantem Volumenanteil (20 %) auf das Abriebverhalten von durch Heißpressen hergestellten AA6061 Matrixverbundwerkstoffen wurden untersucht. Die Verschleißuntersuchungen wurden bei einer Gleitgeschwindigkeit von 1,2 m/s gegen Siliziumkarbid mit einem Stift-Scheibe-Verschleißtester durchgefü hrt bei Normalbelastungen von 5, 10 und 15 N bei Raumtemperatur. Die Verschleiß-Morphologien der verschlissenen Oberflä chen wurden unter Verwendung eines Rasterelektronenmikroskops auf die Verschleißmechanismen untersucht. Die Auswirkungen der Verstä rkung auf das Verschleißverhalten von AA6061 Matrix-Verbundmaterialien wurden beobachtet. Die Ergebnisse zeigen, dass die optimale Verschleißfestigkeit durch mit Borcarbid verstä rkte Verbundteile erhalten wird. Alle Proben wiesen eine bessere Verschleißfestigkeit im Vergleich zu Proben ohne Verstä rkung in allen untersuchten Bedingungen auf. Die Charakterisierung durch das Rasterelektronenmikroskops zeigte, dass die Prü flinge eine komplexe Kombination von Verschleißmechanismen auf der geschä digten Oberflä che haben.

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Optimizing the Three-Body Abrasion Wear of Quenched and Tempered Steel

Kumari

Sharma

Bansal

et al. 2021

Lecture Notes on Multidisciplinary Industrial Engineering

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Application of factorial techniques to study the wear of Al hybrid composites with graphite addition

Cited by 183 publications

References 21 publications

Fabrication characteristics and tribological behavior of Al/SiC/Gr hybrid aluminum matrix composites: A review

Fabrication characteristics and tribological behavior of Al/SiC/Gr hybrid aluminum matrix composites: A review

Abrasive wear behavior of various reinforced AA6061 matrix composites produced with hot pressing process: A comparative study

Optimizing the Three-Body Abrasion Wear of Quenched and Tempered Steel

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