Investigation of porosity, microstructure and mechanical properties of additively manufactured graphene reinforced AlSi10Mg composite

Tiwari, Jitendar Kumar; Mandal, Ajay; Sathish, N.; Agrawal, A. K.; Srivastava, Avanish Kumar

doi:10.1016/j.addma.2020.101095

Cited by 34 publications

(36 citation statements)

References 41 publications

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“…SLG displays high carrier mobility that can reach to about 10 5 -10 6 cm 2 V -1 s -1 , two to three orders of magnitude higher than silicon; high mechanical strength of about 130 GPa (130 GPa = 13256310768.713 Kg/m 2 ), several times higher than steel; electrical and thermal conductivities higher than copper and diamond, respectively; high transmission of about 97.7%; excellent lubricity; broad spectrum antimicrobial properties etc. [ [4] , [5] , [6] , [7] , [8] , [9] , [10] , [11] , [12] , [13] , [14] ]. Graphene and GRMs can be produced by various top down and bottom up approaches [ [4] , [5] , [6] , [7] ].…”

Section: Graphene and Graphene Related Materialsmentioning

confidence: 99%

“…Besides the conventional approach for the component and system developments, 3D printing could also be used for the design and development of graphene/GRMs-based components to be used for COVID-19 [ 12 , 67 , 68 ]. 3D printing is a powerful and futuristic manufacturing process whereby the properties of the materials can be varied to match the properties of conventional metals and alloy and polymers.…”

Section: D Printing Of Graphene/grms-composites For Medical Componenmentioning

confidence: 99%

“…3D printing has also been used to develop medical components based on GRMs-composites [ 82 ]. For example, SS316L- and AlSi10Mg-GRMs composites, both are medical grade materials, were 3D printed, and by varying the amount of GRMs the properties were tuned to suit the need of various spares parts in less lead time [ 12 , 83 ]. The chitosan-graphene, poly(trimethylene carbonate)-graphene, poly(methacrylic acid)-graphene, polyethylene glycol-graphene composites-based scaffolds have been developed employing 3D printing [ 82 ].…”

Section: D Printing Of Graphene/grms-composites For Medical Componenmentioning

confidence: 99%

“…Figure 7 shows the application of 3D printing in development of samples/components based graphene-metal ( Figure 7 a) and graphene-polymer composite materials.

Figure 7 (a) Graphene reinforced composites were made using a selective laser melting technique, where graphene-coated metal powders were employed to make the components [ 12 , 83 ]. (b) 3D printing was employed to develop polymer-graphene composites-based respirators.…”

Section: D Printing Of Graphene/grms-composites For Medical Componenmentioning

confidence: 99%

“…Over the past few years, graphene and graphene-related materials (GRMs) have attracted huge attention of the researchers owing to their wide spectrum properties such as high surface area, high electrical mobility and conductivity, excellent mechanical, electrochemical and piezoelectric properties, and efficacy against microbes and viruses [ [4] , [5] , [6] , [7] , [8] , [9] , [10] , [11] , [12] , [13] , [14] ]. Recently, few good reviews appeared in the literature revealing the authors views and projections on the possible contribution of graphene-based materials in the global fight against COVID-19 [ [15] , [16] , [17] ].…”

Section: Introductionmentioning

confidence: 99%

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Potential of graphene-based materials to combat COVID-19: properties, perspectives, and prospects

Srivastava

Dwivedi

Dhand

et al. 2020

Materials Today Chemistry

Self Cite

110

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Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a new virus in coronavirus family that causes coronavirus disease (COVID-19), emerges as a big threat to the human race. To date, there is no medicine and vaccine available for COVID-19 treatment. While the development of medicines and vaccines are essentially and urgently required, what is also extremely important is the repurposing of smart materials to design effective systems for combating COVID-19. Graphene and graphene-related materials (GRMs) exhibit extraordinary physicochemical, electrical, optical, antiviral, antimicrobial, and other fascinating properties that warrant them as potential candidates for designing and development of high-performance components and devices required for COVID-19 pandemic and other futuristic calamities. In this article, we discuss the potential of graphene and GRMs for healthcare applications and how they may contribute to fighting against COVID-19.

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Section: Graphene and Graphene Related Materialsmentioning

confidence: 99%

Section: D Printing Of Graphene/grms-composites For Medical Componenmentioning

confidence: 99%

Section: D Printing Of Graphene/grms-composites For Medical Componenmentioning

confidence: 99%

“…Figure 7 shows the application of 3D printing in development of samples/components based graphene-metal ( Figure 7 a) and graphene-polymer composite materials.

Section: D Printing Of Graphene/grms-composites For Medical Componenmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Potential of graphene-based materials to combat COVID-19: properties, perspectives, and prospects

Srivastava

Dwivedi

Dhand

et al. 2020

Materials Today Chemistry

Self Cite

110

View full text Add to dashboard Cite

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Graphene nanoplatelets reinforced Al-Cu-Mg composite fabricated using laser powder bed fusion: microstructure, mechanical properties, and wear behaviour

Pekok

Setchi

Ryan

et al. 2023

Int J Adv Manuf Technol

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Aluminium-based metal matrix composites reinforced with graphene (Gr) and its derivatives have been reported as promising composites due to their superior properties such as strength, damage tolerance, fatigue resistance, and density. However, the crack and porosity susceptibility of Aluminium 2024 Alloy (AA2024) with added Gr when fabricated using additive manufacturing techniques is not sufficiently well understood. The present work addresses this knowledge gap by focusing on the effect of graphene nanoplatelets (GNPs) and scanning speed on the AA2024 composites’ wear performance and microstructural and mechanical properties of specimens fabricated using laser powder bed fusion (LPBF). The experimental findings demonstrate that up to 0.5% presence of Gr in the composite improves its crystallite size and microhardness by up to 37.6% and 45%, respectively; however, it increases the porosity and crack formation due to the high laser power requirement. Moreover, the composites’ macroscale scratch and nanoscale wear performances showed improvements by up to 50% and 56% with higher Gr concentration (0.5%), suggesting that Gr is distributed uniformly in the structure. The improved understanding of the relationship between microstructure and mechanical characteristics of the GNPs/Al2024 composites fabricated using LPBF in terms of cracking and porosity formation is another significant contribution of this work. Graphical abstract

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Defect-Correlated Vickers Microhardness of Al-Si-Mg Alloy Manufactured by Laser Powder Bed Fusion with Post-process Heat Treatments

Cerri

Ghio

Bolelli

2022

J. of Materi Eng and Perform

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Laser powder bed fusion is an additive manufacturing process characterized by different advantages like the manufacture of samples with complex geometry without the use of tools and/or molds. Generally, the manufactured samples are characterized by high tensile strengths which, however, can be affected by the presence of defects due to the unoptimized process parameters. In a large applications field, a low density of the as-built AlSi10Mg samples is a very important parameter to considered, e.g., due to both the loss of the tensile strengths correlated with a premature failure of the samples and the increase in time and costs associated with the manufacturing process. In addition, different post-process heat treatments can increase these effects leading to an ineffective manufacturing process. In this scenario, the present work shows the analysis of spherical and lack-of-fusion pores induced by the laser powder bed fusion process on the AlSi10Mg samples and their variations after different heat treatments (direct aging and T6). At the same time, the influence of pores on the Vickers microhardness and the tensile properties has been studied in the same AlSi10Mg samples (bars and billets) that were printed with single- and double-laser machine setup. Different process parameters were also analyzed and compared. The study was supported by the microstructural and pore analysis performed by optical microscopy along the XZ plane (build direction) and the XY plane. Finally, the greatest effects of pores were observed on the Vickers microhardness values; in fact, two different relationships between microhardness and density variation are discussed. The T6 heat treatment leads to a rounding of the pores already formed in the as-built samples and to a formation of new small pores. Graphical Abstract

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Investigation of porosity, microstructure and mechanical properties of additively manufactured graphene reinforced AlSi10Mg composite

Cited by 34 publications

References 41 publications

Potential of graphene-based materials to combat COVID-19: properties, perspectives, and prospects

Potential of graphene-based materials to combat COVID-19: properties, perspectives, and prospects

Graphene nanoplatelets reinforced Al-Cu-Mg composite fabricated using laser powder bed fusion: microstructure, mechanical properties, and wear behaviour

Defect-Correlated Vickers Microhardness of Al-Si-Mg Alloy Manufactured by Laser Powder Bed Fusion with Post-process Heat Treatments

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