Advances of High Entropy Alloys (2nd Edition)

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystalline Metals and Alloys".

Deadline for manuscript submissions: 31 August 2025 | Viewed by 384

Special Issue Editors

Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
Interests: pyrometallurgy; hydrometallurgy; extractive metallurgy; recovery and separation; secondary resources; mineral extraction
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Guest Editor
Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
Interests: wave-transparent materials; transparent ceramics; high entropy alloys; shape memory alloys; X-ray diffraction; phase transformations; material processing; mechanical behavior of materials; neutron diffraction; synchrotron radiation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Following the successful first edition of this Special Issue of Crystals, we are pleased to announce that submissions to its second edition, entitled "Advances of High Entropy Alloys (2nd Edition)", are now being accepted.

In the past decade, the sudden rise of high entropy alloys (HEAs) has become a research hotspot in the domain of metal materials. HEAs are generally considered to be composed of five or more principal elements and the atomic percentage of each principal element is between 5 at.% and 35 at.%. This unique design concept means that these alloys exhibit high entropy effects in regard to thermodynamics and other characteristics, such as the lattice distortion effect, the sluggish diffusion effect and cocktail effect. Owing to their remarkable and peculiar characteristics, HEAs exhibit excellent properties, such as balanced strength and ductility, wear resistance, anti-oxidation and outstanding corrosion resistance.

We invite researchers to contribute to this Special Issue on “High Entropy Alloys”, which is intended to serve as a unique multidisciplinary forum, covering broad aspects of the science, technology, and application of high entropy alloys.

Potential topics include, but are not limited to, the following:

  • Synthesis of high entropy alloys;
  • Characteristics of structural properties;
  • Excellent properties;
  • Applications.

Dr. Long Meng
Dr. Xiaoming Sun
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. Crystals 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 2100 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
  • corrosion-resistant properties
  • mechanical properties
  • microstructures
  • anti-oxidation properties
  • passivation properties
  • electrochemical properties

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Published Papers (1 paper)

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Research

14 pages, 8698 KiB  
Article
Interfacial Characteristics and Mechanical Performance of IN718/CuSn10 Fabricated by Laser Powder Bed Fusion
by Xiao Yang, Guangsai Zou, Zheng Wang, Xinze He, Mina Zhang and Jingyu Xu
Crystals 2025, 15(4), 344; https://doi.org/10.3390/cryst15040344 - 6 Apr 2025
Viewed by 281
Abstract
To address the critical applications of heterogeneous structures involving nickel-based superalloys (IN718) and copper alloys (CuSn10) under extreme operating conditions, and to address the limitations of traditional joining techniques in terms of interfacial brittleness and geometric constraints, this study employs Laser Powder Bed [...] Read more.
To address the critical applications of heterogeneous structures involving nickel-based superalloys (IN718) and copper alloys (CuSn10) under extreme operating conditions, and to address the limitations of traditional joining techniques in terms of interfacial brittleness and geometric constraints, this study employs Laser Powder Bed Fusion (LPBF) technology, specifically multi-material LPBF (MM-LPBF). By precisely melting IN718 and CuSn10 powders layer by layer, the study directly fabricates multi-material IN718/CuSn10 joint specimens, thereby simplifying the complexity of traditional joining processes. The research systematically investigates the interfacial microstructure and mechanical property evolution laws and underlying mechanisms. It reveals that sufficient element diffusion and hardness gradients are present at the IN718/CuSn10 interface, indicating good metallurgical bonding. However, due to significant differences in thermophysical properties, cracks inevitably appear at the interface. Mechanical property tests indicate that the strength of the IN718/CuSn10 joint specimens falls between that of IN718 and CuSn10, but with lower elongation, and fractures primarily occur at the interface. This research provides theoretical support for establishing a process database for LPBF formed of nickel–copper heterogeneous materials, advancing the manufacturing technology of aerospace multi-material components. Full article
(This article belongs to the Special Issue Advances of High Entropy Alloys (2nd Edition))
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