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Metals
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Graphene Reinforced Metal Matrix Nanocomposites
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Graphene Reinforced Metal Matrix Nanocomposites

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: closed (28 February 2020) | Viewed by 8409

Special Issue Editor

Dr. Abdollah Saboori

E-Mail Website
Guest Editor
Integrated Additive Manufacturing Center, Department of Management and Production engineering, Politecnico di Torino, Corso duca degli Abruzzi 24, 10129 Torino, Italy
Interests: metal additive manufacturing; selective laser melting; electron beam melting; directed energy deposition; stainless steel; titanium alloys; metal matrix composites; materials characterization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Metal matrix nanocomposites (MMNCs) are of great interests, owing mainly to their superior features, which are suitable for different applications, such as functional and structural applications. On the other hand, during the last two decades, in order to fulfil new criteria of working conditions for electronic devices, and also to broaden their industrial applications in different fields, such as automotive, aerospace and electronic packaging, the development of new materials has generated considerable research interest. The technology advancements and, as a result, the need for devices with high efficiencies have encouraged this trend. Nevertheless, the most accurate requirements for the choices of suitable matrix, reinforcement, and techniques (processing and post-processing) are not completely defined. Moreover, new facilities, in the case of metal matrix nanocomposites, are always suggested by the continuous progress of new materials, particularly in the range of the nano-scale. For this reason, it is very interesting to deeply investigate the connection between the features; constituents, including matrix, reinforcement, interphases, and also production techniques.

This Special Issue aims to provide contributions focusing on the emerging trends, both in graphene nanoplatelets and metal matrix composite development, and in composite manufacturing technologies. Original articles and review papers will deal with the following themes, without being limited to them: Processing and characterization of any type of graphene and metal matrices, microstructure evaluation, physical and structural characterization and testing, optimization of properties and processes including calculations, simulation of properties over length-scales, and novel applications of graphene-reinforced metal matrix nanocomposites. Contributions on multiscale composites, advanced manufacturing processes, novel joining methods, cutting-edge joining and assembly processes are also encouraged. Technological advancements and, as a result, the need for devices with high efficiencies are encouraged.

Dr. Abdollah Saboori
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Graphene
  • Metal matrix composite
  • Manufacturing techniques
  • Multiscale composite

Published Papers (3 papers)

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Research

9 pages, 4300 KiB  
Article
Effect of Pore Defects on Mechanical Properties of Graphene Reinforced Aluminum Nanocomposites
by Duosheng Li, Shengli Song, Dunwen Zuo and Wenzheng Wu
Metals 2020, 10(4), 468; https://doi.org/10.3390/met10040468 - 2 Apr 2020
Cited by 18 | Viewed by 2421
Abstract
Pore defects have an important effect on the mechanical properties of graphene reinforced aluminum nanocomposites. The simulation study found that the pores affect the stress distribution in the matrix of the composite. Along the stretching direction, the larger stress appears on both sides [...] Read more.
Pore defects have an important effect on the mechanical properties of graphene reinforced aluminum nanocomposites. The simulation study found that the pores affect the stress distribution in the matrix of the composite. Along the stretching direction, the larger stress appears on both sides of the pore, which is the source of potential cracks. It results in a sharp decrease in the mechanical properties of the composite. The higher the porosity, the greater the tendency of pore aggregation, and the risk of material failure is higher. The stress distribution in the matrix becomes more uneven as the pore size increases, and the large strain area around the pores also increases. Composites with circular pores have a higher strength than other irregularly shaped pores. The failure mode might be pore cracking, while composites with other shape pores are more prone to interface detachment. The simulation value of the stress-strain of the composite material is in good agreement with the experimental value, but the finite element simulation value is larger than the experimental value. Full article
(This article belongs to the Special Issue Graphene Reinforced Metal Matrix Nanocomposites)
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15 pages, 6347 KiB  
Article
Machinability Research on the Micro-Milling for Graphene Nano-Flakes Reinforced Aluminum Alloy
by Hao-Bo Na, Lin-Hong Xu, Guang-Chao Han, Shao-Kang Liu and Lu-Hua Lu
Metals 2019, 9(10), 1102; https://doi.org/10.3390/met9101102 - 14 Oct 2019
Cited by 12 | Viewed by 2644
Abstract
In this paper, plain aluminum was chosen as matrix alloy and graphene reinforced aluminum alloy composites was successfully prepared via powder metallurgy approach. Micro-milling experiments were conducted to explore the effect of varying graphene nanoflakes (GNFs) content (0.5%, 1.0%, and 1.5% by weight) [...] Read more.
In this paper, plain aluminum was chosen as matrix alloy and graphene reinforced aluminum alloy composites was successfully prepared via powder metallurgy approach. Micro-milling experiments were conducted to explore the effect of varying graphene nanoflakes (GNFs) content (0.5%, 1.0%, and 1.5% by weight) on the machinability of composites and their machining results were compared with that of plain aluminum. Chip morphology, milling force, and machined surface morphology were used as the machinability measures. Experiment results showed that when the content of GNFs is less than 1.5%, the grain refinement of GNFs plays a major role. The hardness and density of the composites are increased. When the content of GNFs is more than 1.5%, the agglomeration phenomenon is obvious, which reduces the hardness and density of the composites. Micro-milling results show that the milling force is the highest when the GNFs content is 1%, and curling degree of chips increased as FPT increase for a certain content of graphene of composites. Furthermore, when the content of GNFs in composites is more than 1%, the surface roughness of milling grooves is greatly improved, which may be related to the lubrication of graphene and the formation of continuous chips. Full article
(This article belongs to the Special Issue Graphene Reinforced Metal Matrix Nanocomposites)
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12 pages, 4357 KiB  
Article
Development of Novel AlSi10Mg Based Nanocomposites: Microstructure, Thermal and Mechanical Properties
by Seyed Kiomars Moheimani, Mehran Dadkhah and Abdollah Saboori
Metals 2019, 9(9), 1000; https://doi.org/10.3390/met9091000 - 11 Sep 2019
Cited by 6 | Viewed by 2687
Abstract
Al matrix nanocomposites are interestingly employed in the automotive, military, aerospace and electronics packaging industries. In this study, Graphene Nanoplatelets (GNPs) reinforced AlSi10Mg nanocomposites were produced via powder metallurgy. The effect of GNPs content on density, microstructure and mechanical characteristics of the AlSi10Mg/GNPs [...] Read more.
Al matrix nanocomposites are interestingly employed in the automotive, military, aerospace and electronics packaging industries. In this study, Graphene Nanoplatelets (GNPs) reinforced AlSi10Mg nanocomposites were produced via powder metallurgy. The effect of GNPs content on density, microstructure and mechanical characteristics of the AlSi10Mg/GNPs nanocomposites was investigated systematically. To this aim, AlSi10Mg/GNPs nanocomposites reinforced with 0.5, 1.0 and 2.0 wt.% of GNPs were produced by wet mixing method following by hot compaction at 600 °C. To evaluate the effect of GNPs on mechanical properties of the as-fabricated nanocomposite, Vickers hardness and tensile properties of composites analyzed at room temperature. According to the results, it was found that the fabrication of AlSi10Mg/GNPs nanocomposites is faced with several challenges such as agglomeration and non-uniform dispersion of GNPs that should be addressed to achieve the desirable thermal and mechanical properties. For instance, surprisingly, it is revealed that the mechanical and thermal properties of nanocomposites were deteriorated in the presence of a high quantity of GNPs (>1.0 wt.%), which can be attributed to the GNPs agglomeration and accordingly introduction of internal porosity in the nanocomposite. The relatively low fraction of GNPs can uniformly be dispersed in the matrix and improve the performance of the nanocomposite. Full article
(This article belongs to the Special Issue Graphene Reinforced Metal Matrix Nanocomposites)
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