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Metals
Special Issues
Structure, Properties and Applications of Metal Matrix Composites
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Structure, Properties and Applications of Metal Matrix Composites

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Structural Integrity of Metals".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 2938

Special Issue Editors

Prof. Dr. Ludmil Drenchev

E-Mail Website
Guest Editor
Institute of Metal Science, Equipment and Technologies with Hydroaerodynamics Centre, Bulgarian Academy of Sciences—67 “Shipchenski prohod” Str., Sofia 1574, Bulgaria
Interests: mathematical modeling of MMC structure formation; high-porosity metallic materials
Special Issues, Collections and Topics in MDPI journals
Dr. Mihail Kolev

E-Mail Website
Guest Editor
Institute of Metal Science, Equipment and Technologies With Hydroaerodynamics Centre, Bulgarian Academy of Sciences—67 “Shipchenski prohod” Str., Sofia 1574, Bulgaria
Interests: tribology; high-porosity metallic materials; metal matrix composites
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Metal matrix composites (MMCs) have become the focus of intensive scientific investigation and applied research for their application as structural and functional materials in advanced technological fields, such as automotive and aerospace engineering and other light and heavy industries. Their most important asset is the combination of mechanical and structural properties of a metal-based matrix with those of its reinforcing phase, which results in tailoring material properties to fulfill the requirements of numerous applications. For the last two decades, researchers have adopted solid-state, semi-solid-state, liquid-state, and vapor deposition methods as routes for the fabrication of MMCs. Most important and widely studied MMC systems are aluminum-based matrix reinforced with particulates, continuous and discontinuous fibers and whiskers, copper-based matrix reinforced with wires, particulates and continuous fibers, titanium-based matrices reinforced with particulates and continuous fibers, magnesium-based matrices reinforced with particulates, whiskers, and continuous fibers, and superalloy-based matrices reinforced with wires. Current advances in the development of metal matrix nanocomposites and the emergence of new alloys provide new perspectives for advanced research and applications of MMCs.

This Special Issue aims to provide a worldwide platform for publishing theoretical and experimental articles, reviews, short communications related to the development and synthesis, modeling, wettability phenomena, applications, and the mechanical and tribological characterization of emerging metal-based composites and nanocomposites.

Prof. Dr. Ludmil Drenchev
Dr. Mihail Kolev
Guest Editors

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

  • Metal matrix composites
  • Metal matrix nanocomposites
  • Reinforcement
  • Wettability
  • Processing
  • Microstructure and properties
  • Modeling

Published Papers (2 papers)

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Research

14 pages, 6162 KiB  
Article
Investigation of the Wear Behavior of Dual-Matrix Aluminum–(Aluminum–Carbon Nanotube) Composites
by Noha M. Abdeltawab, Amal M. K. Esawi and Abdalla Wifi
Metals 2023, 13(7), 1167; https://doi.org/10.3390/met13071167 - 23 Jun 2023
Cited by 2 | Viewed by 827
Abstract
Aluminum (Al)–aluminum–carbon nanotube (Al–CNT) dual-matrix (DM) composites are a novel class of nanocomposite materials that combine the ductility of the Al matrix with the hardness and wear resistance of the Al–CNT composite and thus can offer a unique combination of properties that make [...] Read more.
Aluminum (Al)–aluminum–carbon nanotube (Al–CNT) dual-matrix (DM) composites are a novel class of nanocomposite materials that combine the ductility of the Al matrix with the hardness and wear resistance of the Al–CNT composite and thus can offer a unique combination of properties that make them suitable for a wide range of wear applications such as cutting tools, bearings, brake pads, wear-resistant coatings, etc. However, the specific properties of the DM Al–(Al–CNT) composite will depend on several factors related to the material’s composition and the friction conditions. This study investigates the wear behavior of DM Al–(Al–CNT) composites consisting of a primary matrix of soft aluminum in which milled hard particles of (Al–CNT) are dispersed as affected by five parameters: (1) wt.% CNT in the reinforcement particles, (2) mixing ratio between the reinforcement particles and the soft Al matrix, (3) sliding speed, (4) applied load, and (5) distance. The experimental design used a Taguchi fractional factorial orthogonal array (OA) L27 to reduce the number of experiments, and analysis of variance (ANOVA) was used to determine the significance and to model the effect of each control parameter. Results showed that the wear rate could be reduced by up to 80% by tailoring the composition and controlling the friction conditions. It was found that the mixing ratio significantly impacts the wear behavior of DM Al–(Al–CNT) composites. A mixing ratio of 50% and a CNT content of 3 wt.% at the lowest applied load gave the lowest wear rate and coefficient of friction. Scanning electron microscopy investigations showed fragmentations in the reinforced matrix at higher loads and mixing ratios, which negatively impacted the wear behavior. Our findings confirm that DM Al–(Al–CNT) composites are promising for wear applications. However, the wear behavior depends on the composition and microstructural design of the composite, which needs to be carefully studied and understood. Full article
(This article belongs to the Special Issue Structure, Properties and Applications of Metal Matrix Composites)
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9 pages, 9422 KiB  
Communication
Investigating the Effect of SiCp Particle Shape on the Mechanical Behaviors of SiCp/WE43 Magnesium Matrix Composites by Finite Element Simulation
by Hulin Wu, Weihan Li, Yongjun Feng, Lin Xiang and Zhiwen Xie
Metals 2022, 12(10), 1678; https://doi.org/10.3390/met12101678 - 07 Oct 2022
Viewed by 1114
Abstract
Previous results reported that SiCp (Silicon Carbide particles) particle doping proved to be effective in enhancing the wear performance of WE43 magnesium alloy. In this work, finite element simulation was employed to investigate the effect of SiCp particle shape on the mechanical behaviors [...] Read more.
Previous results reported that SiCp (Silicon Carbide particles) particle doping proved to be effective in enhancing the wear performance of WE43 magnesium alloy. In this work, finite element simulation was employed to investigate the effect of SiCp particle shape on the mechanical behaviors of SiCp/WE43 magnesium matrix composites. SiCp particles underwent larger load internally and a smaller plastic deformation under tensile loading, leading to the enhanced strength and stiffness of the composites. Polygonal SiCp particles provided a better enhancement in strength for the composites than round SiCp particles, but the enhancement in stiffness was opposite. Meanwhile, the damage is likely to initiate at the interface between the matrix and particle, at the location of the highest stress concentration. This phenomenon was more prominent in polygonal particle-reinforced composites. These current findings provide a comprehensive understanding of the effect of SiCp particle shape on the mechanical behaviors of magnesium matrix composites. Full article
(This article belongs to the Special Issue Structure, Properties and Applications of Metal Matrix Composites)
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