Development and performance analysis of novel cast copper–SiC–Gr hybrid composites

Ramesh, C.S.; Ahmed, R. Noor; Mujeebu, M. Abdul; Abdullah, M. Z.

doi:10.1016/j.matdes.2008.09.005

Cited by 183 publications

(70 citation statements)

References 11 publications

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“…The hardness of the hybrid composites has also been found to decrease with increasing Gr contents [53,54]. Notably, the increase in Gr contents results in decreased porosity levels in the hybrid composites; therefore, the strength and hardness of these composites should increase.…”

Section: Density and Hardnessmentioning

confidence: 97%

“…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: 97%

“…Two types of factors are responsible for this type of behavior in Al composites. First, the addition of Gr particles leads to decreased hardness, fracture toughness, and ductility of the hybrid composites [53,54]. Moreover, it may lead to an increase in void formation and crack propagation under sliding load because of particle agglomeration and weak Al/Gr and SiC/Gr bonding [62,63].…”

Section: Wear Ratementioning

confidence: 99%

“…[73]. Therefore, Gr particles cannot resist the formation of wear debris and plastic deformation at the wear surface under heavy load conditions [52,53]. By contrast, SiC particles are relatively hard and improve the resistance of composites to abrasion and plastic deformation [68,69,74].…”

Section: Surface and Subsurface Behaviormentioning

confidence: 99%

See 3 more Smart Citations

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

Singh

2016

Friction

121

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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: Density and Hardnessmentioning

confidence: 97%

Section: Microstructural Featuresmentioning

confidence: 97%

Section: Wear Ratementioning

confidence: 99%

Section: Surface and Subsurface Behaviormentioning

confidence: 99%

See 2 more Smart Citations

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

Singh

2016

Friction

121

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“…(b) Presence of microsized and nanosized SiCps enhanced the microhardness of the composite layers. The good dispersion of SiCps and the fine grain structure are the main reasons for this phenomenon, which improves the wear resistance of composites [20]. (c) Orowan strengthening mechanism was due to effective bonding and dispersion of ceramic particles with matrix material [21].…”

Section: Wear Behaviormentioning

confidence: 99%

Wear characteristics of copper-based surface-level microcomposites and nanocomposites prepared by friction stir processing

Cartigueyen

Mahadevan

2016

Friction

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Abstract:In this study, microsized and nanosized silicon carbide particles (SiCps) were successfully incorporated into commercial pure copper to form a surface metal matrix composite by friction stir processing (FSP) at low-heat-input conditions. A cluster of blind holes on a copper plate was used as particle deposition technique during the fabrication of the composite. Pin-on-disc testing was performed under dry sliding conditions to determine the wear characteristics of prepared composite surfaces. The homogeneity of particle distribution both inside the copper matrix and in the wear scar was determined via microstructural observations. It was observed that both microsized and nanosized SiCps were well distributed and homogenous in a stir zone; particles observed were without defects, and good bonding was observed between SiCps and the copper matrix. Comparisons between Cu/SiCp composite layers and friction stir processed (FSPed) Cu and as-received Cu showed that Cu/SiCp nanocomposite layers exhibited superior microhardness and dry sliding wear characteristics.

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Improvement on the Tribological Characteristics of Particulate Copper Silicon Carbide Composites

Esezobor¹,

Oladoye²

2011

EPD Congress 2011

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Development and performance analysis of novel cast copper–SiC–Gr hybrid composites

Cited by 183 publications

References 11 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

Wear characteristics of copper-based surface-level microcomposites and nanocomposites prepared by friction stir processing

Improvement on the Tribological Characteristics of Particulate Copper Silicon Carbide Composites

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