Tribological Behavior of AA1050H24-Graphene Nanocomposite Obtained by Friction Stir Processing

Blanco‐Fernández, Julio; Jiménez‐Macías, Emilio; Muro, Juan Saenz-Diez; Caputi, Lorenzo; Miriello, Domenico; Luca, Raffaella De; Roca, Ángel Sánchez; Fals, Hipólito Carvajal

doi:10.3390/met8020113

Cited by 23 publications

(8 citation statements)

References 30 publications

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“…Jeon et al 12 reported a 15% increment in the thermal conductivity of aluminum alloys when reinforced with graphene and fabricated via FSP. Blanco Fernandez et al 13 also noticed a reduction in wear loss with AA1050H24graphene composite fabricated by FSP. Khodabakhshi et al 14 reported $53% increases in hardness and more than three times increase in the yield strength (YS) of the Al-Mg/graphene nanocomposite fabricated by FSP.…”

Section: Introductionmentioning

confidence: 88%

Fabrication of bulk aluminum-graphene nanocomposite through friction stir alloying

Sharma

Paul

2019

Journal of Composite Materials

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Friction stir alloying is primarily employed for the fabrication of surface composite to improve surface properties like hardness, wear resistance, and corrosion resistance without significantly affecting the bulk properties of the alloy. The present study demonstrates the novel method for the fabrication of bulk aluminum-graphene nanoplatelets composite by using friction stir alloying. Here, the novelty is shown through the method of graphene nanoplatelets incorporation in the stir zone. For this purpose, a channel is fabricated on the cross-sectional surface of the aluminum plate and filled with graphene nanoplatelets. It is then covered by the cross-sectional surface of another aluminum plate of same dimensions and friction stir alloying is carried out. Reference material (RM) is also fabricated at the same parameters without any graphene nanoplatelet reinforcements for the performance evaluation of the nanocomposite. The microhardness of the fabricated composite increased by ∼57% as compared to the reference material. However, the tensile strength of the fabricated Al-graphene nanoplatelet composites decreased marginally as compared to reference material. The strengthening of the composite is explained systematically by various mechanisms. The results of microhardness and tensile test were corroborated with various characterization methods such as optical micrographs, scanning electron microscopy, atomic force microscope, and X-ray diffraction.

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Section: Introductionmentioning

confidence: 88%

Fabrication of bulk aluminum-graphene nanocomposite through friction stir alloying

Sharma

Paul

2019

Journal of Composite Materials

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“…This causes the wear resistance to be more limited compared to the other types of reinforcements. 77,78…”

Section: Resultsmentioning

confidence: 99%

“…This causes the wear resistance to be more limited compared to the other types of reinforcements. 77,78 When N4 and N5 composites were examined in Figures 13(c) and (d), the orientation of the grains caused by the ECAP effect with severe plastic deformation was observed. The obtained images are also supported by various studies.…”

Section: Resultsmentioning

confidence: 99%

The effect of equal-channel angular pressing (ECAP) on the properties of graphene reinforced aluminium matrix composites

Güler

Bağcı

Güler

et al. 2020

Journal of Composite Materials

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In the present study, graphene nanosheets were synthesised by liquid phase exfoliation process, and the obtained graphene was reinforced in the rates of 0.1, 0.2, 0.3 and 0.6 wt.%. After the composites were characterised, they were exposed to Equal Channel Angular Pressing (ECAP) process. While 0.1 wt.% and 0.2 wt.% graphene reinforced composite samples successfully completed the ECAP process, 0.1 wt.% and 0.2 wt.% graphene reinforced composite samples were broken during the ECAP process. Electrical, thermal, and mechanical properties of the composite increased with the increased amount of graphene. The mechanical properties of ECAP-processed samples showed significant increases compared to non-ECAP processed samples. To figure out the effect of the ECAP process, moulds with different channel angles were used, the ECAP temperature was changed, and different passes were performed and the angles of 120° and 90° were used. ECAP-processed samples in both mould angles showed similar mechanical properties. With the increasing ECAP temperature, the mechanical properties of the sample decreased, but its electrical conductivity increased. As the number of passes increased, mechanical properties increased and crack formation in material increased. In addition, it was not possible to successfully remove the matrix composites containing more than 0.3 wt.% graphene from the ECAP process. Especially in the sample containing 0.6 wt.% graphene, brittle fractures were seen during the ECAP process and the sample was divided into many parts. The results showed that the composite responded better to the ECAP process when low amounts of graphene were reinforced in the al matrix. Significant improvements were observed in the properties of these composites after the ECAP process. In this study, the properties of composites with and without ECAP process were extensively investigated. The results were compared in detail with the previous studies. The graphene was produced using a simple method and it was reinforced with the Al matrix with the easiest possible method.

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“…The large surface of the graphene sheets favours its strong interfacial connection with the metal phase of the composite. In solid state preparation of Al-graphene composite by FSW, a huge decrease in the degree of wear is also observed [21]. In another study conducted by Jeon et al [22] the thermal conductivity of a graphene-reinforced composite is increased by near 15% when obtained by FSW.…”

Section: Overlapping Fsw Of Aluminum Alloy Aa6061 With Intermediate Graphene Layermentioning

confidence: 94%

Aluminum Based Composites Obtained by FSP (Review)

Kondoff

Zaekova

Manilova

2021

ETR

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The composites based on aluminum alloys obtained by friction stir processing (FSP) combine the advantages of lightweight aluminum composites with the well-refined structure obtained by deformation in plastic state. When reinforcing elements in the form of powders or nanoplates are introduced in the process, of mixing they are evenly distributed in the processes zone, which acquires a fine-grained structure. The study examines specific results in the use of various tools and materials, as well as some basic parameters of the process in terms of surface smoothness, defects and some performance characteristics of the tested samples, such as strength, ductility, hardness and corrosion resistance.

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Tribological Behavior of AA1050H24-Graphene Nanocomposite Obtained by Friction Stir Processing

Cited by 23 publications

References 30 publications

Fabrication of bulk aluminum-graphene nanocomposite through friction stir alloying

Fabrication of bulk aluminum-graphene nanocomposite through friction stir alloying

The effect of equal-channel angular pressing (ECAP) on the properties of graphene reinforced aluminium matrix composites

Aluminum Based Composites Obtained by FSP (Review)

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