Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
5.8
3.1
Journals
Materials
Special Issues
Advanced Science and Technology of High Entropy Materials
materials-logo
Submit to Special Issue Submit Abstract to Special Issue Review for Materials Propose a Special Issue

Journal Menu

► Journal Menu

Journal Browser

► Journal Browser
share announcement

Advanced Science and Technology of High Entropy Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Metals and Alloys".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 2268

Special Issue Editors

Dr. Hui Jiang

E-Mail Website
Guest Editor
College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Interests: high entropy alloy; eutectic; mechanical properties; corrosion
Special Issues, Collections and Topics in MDPI journals
Dr. Tianxin Li

E-Mail Website
Guest Editor
College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
Interests: high entropy alloy; CALPHAD; alloy design; microstructure

Special Issue Information

Dear Colleagues,

This Special Issue is focused on recent developments in the field, as well as the most recent advances in high-entropy alloys—their synthesis, characterization, structures, properties and applications. High-entropy alloys have revolutionized the design of traditional alloys and offer a new paradigm for designing metallic alloys with salient properties. Recently, high-entropy alloys have increasingly become the focus of researchers due to their excellent properties, such as their high strength, ductility and corrosion and creep resistance. The main determinants of the future success of high-entropy alloys are further improvements of existing and the development of novel high-entropy alloys. The properties of high-entropy alloys are mainly based on their structure, from the atomic to the microstructure scale.

This Special Issue aims to provide a comprehensive overview of recent advances in high-entropy alloys, including their synthesis, characterization and applications. We welcome contributions related to topics such as the following:

  • High-entropy alloy composites for improved mechanical performance;
  • The application of high-entropy alloys;
  • The design and preparation of high-entropy alloys;
  • The microstructure characterization of high-entropy alloys;
  • Theoretical studies on the mechanical or functional performance of high-entropy alloys.

We hope that this Special Issue will stimulate further research in the field of high-entropy alloys and promote their practical application.

Dr. Hui Jiang
Dr. Tianxin Li
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. Materials is an international peer-reviewed open access semimonthly 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
  • characterization
  • microstructure
  • strength
  • ductility
  • hard
  • wear
  • corrosion
  • physical properties

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue polices can be found here.

Published Papers (3 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

15 pages, 6321 KiB  
Article
Production and Characterization of Fine-Grained Multielement AlCoxCrFeNi (x = 1, 0.75, 0.5) Alloys for High-Temperature Applications
by Khaja Naib Rasool Shaik, Mauro Bortolotti, Iñaki Leizaola, Miguel Angel Lagos Gomez and Cinzia Menapace
Materials 2024, 17(19), 4897; https://doi.org/10.3390/ma17194897 - 6 Oct 2024
Viewed by 582
Abstract
In the present work, three different AlCoxCrFeNi (x = 1, 0.75, 0.5) alloys were produced through the mechanical milling of powders and spark plasma sintering. These alloys were characterized in terms of their microstructural, mechanical, and oxidation behaviors. Mechanical milling and spark plasma [...] Read more.
In the present work, three different AlCoxCrFeNi (x = 1, 0.75, 0.5) alloys were produced through the mechanical milling of powders and spark plasma sintering. These alloys were characterized in terms of their microstructural, mechanical, and oxidation behaviors. Mechanical milling and spark plasma sintering were chosen to achieve a fine and homogeneous microstructure. Pore-free samples were produced by properly setting the sintering parameters. The unavoidable uptake of oxygen from the powders when exposed to air after milling was advantageously used as a source of oxides, which acted as reinforcing particles in the alloy. Oxidation behavior, studied through TGA tests, showed that decreasing the Co content promotes better oxidation protection due to the formation of a dense, compact Al2O3 layer. The alloy containing the lowest amount of Co is considered a good candidate for high-temperature structural applications. Full article
(This article belongs to the Special Issue Advanced Science and Technology of High Entropy Materials)
►▼ Show Figures

Figure 1

15 pages, 7008 KiB  
Article
Radiation Resistance of High-Entropy Alloys CoCrFeNi and CoCrFeMnNi, Sequentially Irradiated with Kr and He Ions
by Bauyrzhan Amanzhulov, Igor Ivanov, Vladimir Uglov, Sergey Zlotski, Azamat Ryskulov, Alisher Kurakhmedov, Asset Sapar, Yerulan Ungarbayev, Mikhail Koloberdin and Maxim Zdorovets
Materials 2024, 17(19), 4751; https://doi.org/10.3390/ma17194751 - 27 Sep 2024
Viewed by 615
Abstract
This work studied the effect of sequential irradiation by krypton and helium ions at room temperature on the composition and structure of CoCrFeNi and CoCrFeMnNi high-entropy alloys (HEAs). Irradiation of the HEAs by 280 keV Kr14+ ions up to a fluence of [...] Read more.
This work studied the effect of sequential irradiation by krypton and helium ions at room temperature on the composition and structure of CoCrFeNi and CoCrFeMnNi high-entropy alloys (HEAs). Irradiation of the HEAs by 280 keV Kr14+ ions up to a fluence of 5 × 1015 cm–2 and 40 keV He2+ ions up to a fluence of 2 × 1017 cm–2 did not alter their elemental distribution and constituent phases. Blisters formed on the nickel surface after sequential irradiation, where large blisters had an average diameter of 3.8 μm. The lattice parameter of the (Co, Cr, Fe and Ni) and (Co, Cr, Fe, Mn and Ni) solid solutions increased by 0.17% and 0.37% after sequential irradiation, respectively. Irradiation by Kr ions led to a decrease in tensile macrostresses in the HEAs in the region of krypton ion implantation (Region I) and the formation of compressive macrostresses in the region behind the peak of implanted krypton (Region II). Sequential irradiation formed large compressive stresses in Ni and HEAs equal to −131.5 MPa, −300 MPa and −613.5 MPa in Ni, CoCrFeNi and CoCrFeMnNi, respectively, in the Region II. Irradiation by krypton ions decreased the dislocation density by 1.6–2.3 times, and irradiation with helium ions increased it by 11–15 times relative to unirradiated samples for CoCrFeNi and CoCrFeMnNi, respectively. Sequentially irradiated CoCrFeMnNi HEA had higher macrostresses and dislocation density than CoCrFeNi. Full article
(This article belongs to the Special Issue Advanced Science and Technology of High Entropy Materials)
►▼ Show Figures

Figure 1

11 pages, 11934 KiB  
Article
Effect of Alloying on Microstructure and Mechanical Properties of AlCoCrFeNi2.1 Eutectic High-Entropy Alloy
by Xue-Yao Tian, Hong-Liang Zhang, Zhi-Sheng Nong, Xue Cui, Ze-Hao Gu, Teng Liu, Hong-Mei Li and Eshkuvat Arzikulov
Materials 2024, 17(18), 4471; https://doi.org/10.3390/ma17184471 - 12 Sep 2024
Cited by 1 | Viewed by 779
Abstract
In order to explore the effect of alloying on the microstructures and mechanical properties of AlCoCrFeNi2.1 eutectic high-entropy alloys (EHEAs), 0.1, 0.2, and 0.3 at.% V, Mo, and B were added to the AlCoCrFeNi2.1 alloy in this work. The effects of [...] Read more.
In order to explore the effect of alloying on the microstructures and mechanical properties of AlCoCrFeNi2.1 eutectic high-entropy alloys (EHEAs), 0.1, 0.2, and 0.3 at.% V, Mo, and B were added to the AlCoCrFeNi2.1 alloy in this work. The effects of the elements and contents on the phase composition, microstructures, mechanical properties, and fracture mechanism were investigated. The results showed that the crystal structures of the AlCoCrFeNi2.1 EHEAs remained unchanged, and the alloys were still composed of FCC and BCC structures, whose content varied with the addition of alloying elements. After alloying, the aggregation of Co, Cr, Al, and Ni elements remained unchanged, and the V and Mo were distributed in both dendritic and interdendritic phases. The tensile strengths of the alloys all exceeded 1000 MPa when the V and Mo elements were added, and the Mo0.2 alloy had the highest tensile strength, of 1346.3 MPa, and fracture elongation, of 24.6%. The alloys with the addition of V and Mo elements showed a mixed ductile and brittle fracture, while the B-containing alloy presented a cleavage fracture. The fracture mechanism of Mo0.2 alloy is mainly crack propagation in the BCC lamellae, and the FCC dendritic lamellae exhibit the characteristics of plastic deformation. Full article
(This article belongs to the Special Issue Advanced Science and Technology of High Entropy Materials)
►▼ Show Figures

Graphical abstract

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-3
Back to TopTop