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New Advances in High-Temperature Structural Materials
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New Advances in High-Temperature Structural Materials

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

Deadline for manuscript submissions: 20 September 2025 | Viewed by 1574

Special Issue Editors

Dr. Shiwei Wu

E-Mail Website
Guest Editor
Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
Interests: metal additive manufacturing; high-entropy alloys; high-temperature structural materials; precipitate; heterostructure
Dr. Zixu Guo

E-Mail Website
Guest Editor
Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore
Interests: superalloys; creep/fatigue; damage mechanism; crystal plasticity modeling; experimental mechanics

Special Issue Information

Dear Colleagues,

High-temperature structural materials cover a wide range of critical fields, including jet engines, rocket propulsion systems, and heat shields in aerospace; gas turbines, steam turbines, and nuclear reactors in power generation; high-performance engines and exhaust systems in automotives; and furnaces, kilns, and chemical processing equipment in industrial processes.

This Special Issue focuses on the latest developments in research and technology of high-temperature structural materials. We welcome articles, communications, and reviews on the state of the art in the field of conventional, high-temperature structural materials, such as superalloys, refractory alloys, ceramics, intermetallics, composites, thermal barrier coatings, etc. Meanwhile, potential next-generation, high-temperature structural materials capable of withstanding elevated temperatures, such as precipitation-strengthened and refractory medium- and high-entropy alloys, ultra-high-temperature ceramics, advanced intermetallics, and oxide-dispersion-strengthened alloys, are also welcomed. Topics of interest for this Special Issue include, but are not limited to, the following:

  • Material-design concept;
  • Synthesis and manufacturing method;
  • Microstructural characterization technique;
  • Static mechanical property;
  • Creep and fatigue property;
  • Oxidation, corrosion, and thermal resistance;
  • Predictive modeling.

Dr. Shiwei Wu
Dr. Zixu Guo
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-temperature structural materials
  • material design
  • synthesis and manufacturing
  • microstructural characterization
  • mechanical property
  • environmental resistance
  • predictive modeling
  • medium- and high-entropy alloys
  • superalloys

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Published Papers (2 papers)

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Research

20 pages, 1952 KiB  
Article
Advanced Constitutive Modeling of the Hot Deformation Behavior of Ni-Based Superalloys: Modified Kobayashi–Dodd and Khan–Huang–Liang Models with Experimental Validation
by Ali Abd El-Aty, Yong Xu, Bandar Alzahrani, Alamry Ali and Abdallah Shokry
Materials 2025, 18(11), 2500; https://doi.org/10.3390/ma18112500 - 26 May 2025
Viewed by 48
Abstract
The hot deformation behavior of nickel-based superalloy 925 under different strain rates and elevated temperatures is inherently complex because of its strong dependence on strain, strain rate, and temperature. Constitutive modeling becomes essential to capture and predict this behavior accurately. In this study, [...] Read more.
The hot deformation behavior of nickel-based superalloy 925 under different strain rates and elevated temperatures is inherently complex because of its strong dependence on strain, strain rate, and temperature. Constitutive modeling becomes essential to capture and predict this behavior accurately. In this study, two modified versions of the Kobayashi–Dodd (KD) and the Khan–Huang–Liang (KHL) models were introduced based on a detailed analysis of the alloy’s hot deformation characteristics, aiming to increase their predictive capabilities. The accuracy of the modified models, along with their original versions, was rigorously evaluated via the key statistical parameters correlation coefficient (R), average absolute relative error (AARE), and root mean square error (RMSE). The findings revealed that the modified KD and KHL models agreed well with the experimental data, indicating a remarkable fit. Both modified versions demonstrated high predictive accuracy, each achieving an R-value of 0.997. The modified KHL model reported an AARE of 3.07% and an RMSE of 7.49 MPa, whereas the modified KD model achieved an AARE of 3.19% and an RMSE of 6.64 MPa. These results confirm that the improved models offer superior performance in capturing the hot flow behavior of nickel-based superalloy 925, making them valuable tools for high-temperature forming process simulations and improving the overall performance of components. Furthermore, by enabling more efficient and optimized forming processes, these models contribute to sustainable manufacturing by minimizing material waste and optimizing energy usage, supporting global sustainability initiatives in line with SDG 9, SDG 12, and SDG 13. Full article
(This article belongs to the Special Issue New Advances in High-Temperature Structural Materials)
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12 pages, 3477 KiB  
Article
Mechanistic Insights into CO2 Adsorption of Li4SiO4 at High Temperature
by Nan Ma, Silin Wei, Jinglin You, Fu Zhang and Zhaohui Wu
Materials 2025, 18(2), 319; https://doi.org/10.3390/ma18020319 - 12 Jan 2025
Viewed by 1029
Abstract
The development of materials with high adsorption capacity for capturing CO2 from industrial exhaust gases has proceeded rapidly in recent years. Li4SiO4 has attracted attention due to its low cost, high capture capacity, and good cycling stability for direct [...] Read more.
The development of materials with high adsorption capacity for capturing CO2 from industrial exhaust gases has proceeded rapidly in recent years. Li4SiO4 has attracted attention due to its low cost, high capture capacity, and good cycling stability for direct high-temperature CO2 capture. Thus far, the CO2 adsorption mechanism of Li4SiO4 is poorly understood, and detailed phase transformations during the CO2 adsorption process are missing. Here, aided by in situ X-ray diffraction and in situ Raman spectroscopy, we find that Li4SiO4 reacts with CO2 to form Li2SiO3 and Li2CO3 in CO2 atmosphere at 973 K, with no detectable involvement of crystalline Li2O during the adsorption process. Moreover, we observe a formation of stepped structures in the Li4SiO4 surface after CO2 adsorption by scanning electron microscopy. To illustrate the formation of stepped structures, we propose a modified double-shell mechanism, suggesting a possible two-dimensional nucleation and growth of Li2CO3. This work provides a deeper understanding of the CO2 adsorption mechanism and paves a way for further optimization of Li4SiO4-based adsorbents. Full article
(This article belongs to the Special Issue New Advances in High-Temperature Structural Materials)
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