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Metals
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Synthesis, Microstructure, and Properties of Lightweight Metal Matrix Composite Materials
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Synthesis, Microstructure, and Properties of Lightweight Metal Matrix Composite Materials

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Matrix Composites".

Deadline for manuscript submissions: 25 February 2025 | Viewed by 898

Special Issue Editors

Dr. Roberto Martínez Sánchez

E-Mail Website
Guest Editor
Department of Metallurgy and Structural Integrity, Center for Research in Advanced Materials, Chihuahua 31136, Mexico
Interests: metal matrix composite; aluminum alloys; high-entropy alloys; phase transformations; microstructure relation with mechanical properties
Special Issues, Collections and Topics in MDPI journals
Dr. Sergio Gonzalez Sanchez

E-Mail Website
Guest Editor
Department of Mechanical and Construction Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, UK
Interests: light alloys; rapid solidification; shape memory alloys; mechanical properties; high-entropy alloys
Special Issues, Collections and Topics in MDPI journals
Dr. Carlos G. Garay Reyes

E-Mail Website
Guest Editor
Department of Metallurgy and Structural Integrity, Center for Research in Advanced Materials, Chihuahua 31136, Mexico
Interests: high-entropy alloys; metal matrix composite; aluminum alloys; Ni-based alloys; phase transformations; mechanical properties
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues

Aluminum and magnesium alloys (lighweight alloys) play a crucial role in the development of engineering materials due to their ability to improve mechanical performance through different routes, such as alloying elements, variations in processing routes, and heat treatments. Furthermore, their ability to form composites using various reinforcing materials of different natures (such as oxides, carbides, nitrides, or carbon nanotubes) increases their range of applications. These composites can be strengthened by decomposing a super-saturated solid solution (forming a precipitate dispersion) or introducing insoluble phases into the metallic matrix. Dispersion-strengthened materials belong to the composite material group; their structure is formed by a polycrystalline matrix into which dispersed particles are incorporated (mainly oxides, carbides, and nitrides). The dispersoid strengthening effect is based on the obstruction of dislocation movement, dislocation density increase, and grain refining. The strengthening effect of the dispersoids depends on their type, size, morphology, volume fraction, and distribution. Their resistance against dissolution and coalescence is also key (particularly at high temperatures). The exciting field of lightweight metal matrix composite materials is still waiting to be fully explored by material scientists. Thus, this Special Issue will strengthen the current understanding, design, synthesis, and development of these materials, to provide a platform for combining high-quality research and innovative ideas and to bridge the gap between fundamental research and technological applications.

Dr. Roberto Martínez Sánchez
Dr. Sergio Gonzalez Sanchez
Dr. Carlos G. Garay Reyes
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

  • aluminium-based composites
  • magnesium-based composites
  • characterization
  • mechanical properties
  • microstructure

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Published Papers (1 paper)

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Research

14 pages, 5221 KiB  
Article
Effect of La on Microstructure, Mechanical Properties and Friction Behavior of In Situ Synthesized TiB2/6061 Composites
by Jing Jia, Weibin Zhuang, Jinghui Li, Qing Cao and Jingfu Liu
Metals 2024, 14(10), 1169; https://doi.org/10.3390/met14101169 - 14 Oct 2024
Viewed by 743
Abstract
In situ synthesized 3 wt.%TiB2/6061 composites with different La contents were fabricated by an Al-K2TiF6-KBF4 system at 850 °C with ball milling and stirring casting. The effects of La content (0 wt.%, 0.1 wt.%, 0.3 wt.%, [...] Read more.
In situ synthesized 3 wt.%TiB2/6061 composites with different La contents were fabricated by an Al-K2TiF6-KBF4 system at 850 °C with ball milling and stirring casting. The effects of La content (0 wt.%, 0.1 wt.%, 0.3 wt.%, 0.5 wt.%) on the microstructures and mechanical properties of the composites at room temperature were investigated. The results showed that the addition of La could refine α-Al grains and modify the morphology of TiB2 particles significantly. In 0.3 wt.%La-3 wt.%TiB2/6061 composites, there are chamfering planes on the surface of TiB2 particles, which are caused by the adsorption of La on the {112¯0}, {12¯12} and {101¯1} crystal planes. The values of YS, UTS and EL of the composites with 0.3 wt.% La were 216.8 MPa, 273.0 MPa and 11.2%, which were 69.2%, 34.8% and 5.7% higher than those of the 3 wt.%TiB2/6061 composites. The improvement of mechanical properties was mainly attributed to the grain refinement, distributed particles and transformation of particle morphology. In friction behavior, 0.3 wt.%La-3 wt.%TiB2/6061 composites have the best wear resistance properties with the smallest and shallowest grooves on the surface after wearing. The main mechanisms of the composites are adhesive wear and abrasive wear. In summary, the best content of La addition in 3 wt.%TiB2/6061 composites is 0.3 wt.%. Full article
(This article belongs to the Special Issue Synthesis, Microstructure, and Properties of Lightweight Metal Matrix Composite Materials)
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