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Advanced High-Performance Metals and Alloys: Microstructural Evolution, Mechanical Properties, and Strengthening Mechanisms

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

Deadline for manuscript submissions: 20 April 2026 | Viewed by 533

Special Issue Editors

Dr. Guobing Wei

E-Mail Website
Guest Editor
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
Interests: metallic materials; mechanical properties; numerical modeling
Special Issues, Collections and Topics in MDPI journals
Dr. Xi Zhang

E-Mail Website
Guest Editor Assistant
Henan Province Engineering Research Center of Additive Manufacturing Aeronautical Materials, Nanyang Institute of Technology 1 , Nanyang 473004, China
Interests: high-entropy alloys; surface treatment

Special Issue Information

Dear Colleagues,

Advanced high-performance metals and alloys are essential in various engineering applications due to their outstanding mechanical properties and versatility. The microstructural evolution in these materials significantly influences their performance characteristics, making it vital to study these phenomena for the development of new alloys and the enhancement of existing ones. We are pleased to invite you to contribute to this important field of research.

This Special Issue aims to compile cutting-edge research on the microstructural evolution, mechanical properties, and strengthening mechanisms of advanced high-performance metals and alloys. It will highlight the latest advancements in the field and provide insights into the relationship between microstructural features and material performance. This topic aligns well with the journal's scope, which focuses on materials science and engineering. Our goal is to gather at least 10 articles, with the potential for the Special Issue to be printed in book form if this target is met.

In this Special Issue, we welcome original research articles and comprehensive reviews. Research areas may include (but are not limited to) the following:

- Microstructural characterization techniques;

- Mechanical testing and property evaluation;

- Strengthening mechanisms in metals and alloys;

- Theoretical and computational modeling of microstructural changes;

- Correlation between processing, microstructure, and performance.

We look forward to receiving your contributions.

Dr. Guobing Wei
Guest Editor

Dr. Xi Zhang
Guest Editor Assistant

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 250 words) can be sent to the Editorial Office for assessment.

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

  • advanced metals
  • high-performance alloys
  • microstructural evolution
  • mechanical properties
  • strengthening mechanisms
  • alloy design
  • phase transformation

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

Published Papers (2 papers)

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Research

15 pages, 6005 KB  
Article
The Effect of Tempering Temperature on the Microstructure and Properties of a Novel High-Temperature Bearing Steel
by Kai Zheng, Hui Wang, Feng Yu, Shuangping Lin, Zhenqian Zhong, Cunyu Wang, Jianxiong Liang and Wenquan Cao
Materials 2026, 19(2), 443; https://doi.org/10.3390/ma19020443 (registering DOI) - 22 Jan 2026
Abstract
The microstructure, precipitation behavior, and mechanical properties of an ultrahigh-strength stainless bearing steel after tempering were investigated using multiscale characterization techniques along with tensile and impact testing. Based on the experimental results, strengthening and toughening mechanisms are discussed. The findings indicate that in [...] Read more.
The microstructure, precipitation behavior, and mechanical properties of an ultrahigh-strength stainless bearing steel after tempering were investigated using multiscale characterization techniques along with tensile and impact testing. Based on the experimental results, strengthening and toughening mechanisms are discussed. The findings indicate that in samples tempered between 450 °C and 540 °C, tensile strength increases while impact toughness decreases. This is primarily attributed to the precipitation of M6C and M2C carbides and a reduction in dislocation density. In contrast, after tempering at 580 °C, the formation of increasing amounts of thick film-like reverted austenite along lath and twin boundaries results in a slight decline in tensile strength accompanied by improved elongation. The dominant strengthening mechanism for samples tempered between 450 °C and 500 °C is the synergistic effect of dislocation strengthening and precipitation strengthening. Above 520 °C, precipitation strengthening becomes the primary mechanism. However, the coarsening of acicular or lamellar M2C carbides during precipitation appears to significantly degrade toughness. Full article
(This article belongs to the Special Issue Advanced High-Performance Metals and Alloys: Microstructural Evolution, Mechanical Properties, and Strengthening Mechanisms)
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21 pages, 14803 KB  
Article
Creep Behavior and Its Influencing Factors in High-Entropy Superalloys: A Molecular Dynamics Simulation Study
by Kangning Han, Qiuju Wang, Yaxin Zhu, Shulin Yuan, Changwei Wang, Shuang Liang and Lv Zhao
Materials 2026, 19(2), 233; https://doi.org/10.3390/ma19020233 - 7 Jan 2026
Viewed by 191
Abstract
In aero-engine applications, turbine blades operate under high-temperature and high-pressure thermomechanical cyclic loading conditions, which demand exceptional mechanical performance. High-entropy superalloys, characterized by a stable dual-phase γ/γ′ microstructure, have emerged as promising candidates for high-temperature structural materials due to their superior creep resistance. [...] Read more.
In aero-engine applications, turbine blades operate under high-temperature and high-pressure thermomechanical cyclic loading conditions, which demand exceptional mechanical performance. High-entropy superalloys, characterized by a stable dual-phase γ/γ′ microstructure, have emerged as promising candidates for high-temperature structural materials due to their superior creep resistance. In this study, the creep behaviors of high-entropy superalloys are systematically investigated using molecular dynamics simulations, exploring the effects of stress, temperature, γ/γ′ lattice misfit, and γ′ volume fraction on creep deformation mechanisms. The results show that both stress and temperature significantly influence creep behavior, with temperature exerting a more dominant effect. As the applied stress increases, the dominant creep mechanism evolves from atomic diffusion to dislocation nucleation and motion, eventually leading to phase transformation. Additionally, the γ/γ′ lattice misfit and γ′ volume fraction are found to critically affect the alloy’s creep resistance. Specifically, creep resistance initially increases and then decreases with increasing lattice misfit magnitude, while a negative misfit yields better performance than a positive one. Moreover, increasing the γ′ volume fraction enhances the alloy’s ability to resist creep deformation. Microstructural analysis and atomic diffusion data further reveal that the creep resistance of high-entropy superalloys is closely associated with the structural stability of the γ/γ′ dual-phase system. These findings provide useful insights for optimizing the high-temperature performance of high-entropy superalloys through microstructural design. Full article
(This article belongs to the Special Issue Advanced High-Performance Metals and Alloys: Microstructural Evolution, Mechanical Properties, and Strengthening Mechanisms)
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