High-Entropy Alloy Films and Coatings

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Surface Characterization, Deposition and Modification".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 874

Special Issue Editors


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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

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

Special Issue Information

Dear Colleagues,

A surface is a critical material component and can be associated with performances in industrial applications. Altering the composition and microstructure of a surface can considerably improve its qualities based on the service environment without impacting the bulk material's performance, thereby extending the equipment's service life. In this sense, high-entropy alloys comprise a new generation of materials with unique characteristics and properties, such as improved mechanical properties and superior resistance to corrosion and high temperatures. In addition, they have shown great potential in coating and film applications for demanding environments. In recent years, tremendous developments have been observed in the design and synthesis methods of high-entropy coatings and films, resulting in the microstructural evolution of these alloys and generating more versatile applications. However, this exciting field of coatings and films is still waiting to be explored by materials scientists and surface engineers. Thus, this Special Issue aims to strengthen the current understanding, design, synthesis, and development of such materials in order to provide a platform to combine high-quality research and innovative ideas and bridge the gap between fundamental research and technological applications, such as applications demanding high-performance protection in extreme conditions.

In particular, the topics of interest include but are not limited to the following:

  • High-entropy alloy films and coatings;
  • Film and coating technologies;
  • Composition design;
  • Synthesis and development;
  • Microstructure;
  • Mechanical Properties;
  • Technological applications.

Dr. Carlos G. Garay Reyes
Dr. Roberto Martínez Sánchez
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. Coatings 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

  • high-entropy alloys
  • films
  • coatings
  • microstructure
  • mechanical properties.

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Published Papers (1 paper)

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Research

14 pages, 4315 KiB  
Article
Study on Microstructure and Property Evolution of Heavily Deformed AlCoCrFeNi High Entropy Alloy at High Temperature
by Zhenyu Dou, Jingou Yin, Ming Wei, Baoguang Zhang, Jian Wang and Sujun Lu
Coatings 2025, 15(2), 128; https://doi.org/10.3390/coatings15020128 - 23 Jan 2025
Viewed by 618
Abstract
High-temperature heat treatments can improve the element distributions and phase structures of AlCoCrFeNi high entropy alloys (HEAs). However, the long-term isothermal annealing at high temperatures will make the grains grow crazily. In this study, the problem of grain growth caused by high-temperature annealing [...] Read more.
High-temperature heat treatments can improve the element distributions and phase structures of AlCoCrFeNi high entropy alloys (HEAs). However, the long-term isothermal annealing at high temperatures will make the grains grow crazily. In this study, the problem of grain growth caused by high-temperature annealing at 1200 °C was solved by heavily deformed AlCoCrFeNi HEAs. The ultrafine grains formed by dynamic recrystallization will grow firstly during the subsequent annealing process, which inhibits the increase in the larger grains in the hot-extruded AlCoCrFeNi HEAs. The effect of high-temperature annealing on hot-extruded AlCoCrFeNi HEAs was also explored simultaneously in detail. After annealing at 1200 ℃ for 2 h, the compressive strength and fracture strain of the AlCoCrFeNi HEA reached an astonishing result of 3750 MPa and 43%, respectively. The results are attributed to the skeleton-liked FCC structures deeply interspersed into the grains and more importantly, the fine annealed grains which still maintained an average diameter of 20 μm. Additionally, the new nano-precipitates did not expand wildly at high temperatures either. Research on heavily deformed AlCoCrFeNi HEAs isothermally annealed at 1200 °C provides an available idea for further improving the properties of these HEAs. Full article
(This article belongs to the Special Issue High-Entropy Alloy Films and Coatings)
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