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Fatigue, Damage and Fracture of Alloys
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Fatigue, Damage and Fracture of Alloys

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

Deadline for manuscript submissions: 20 August 2025 | Viewed by 2279

Special Issue Editors

Dr. Bingbing Li

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Guest Editor
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300000-301900, China
Interests: mechanics of materials; material characterization; multiaxial fatigue; thermomechanical fatigue; constitutive modeling
Special Issues, Collections and Topics in MDPI journals
Dr. Yajing Li

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Guest Editor
Mechanical Engineering, East China University of Science and Technology, Shanghai 200231, China
Interests: additive manufacturing; multiaxial fatigue; fatigue failure mechanism; fatigue life prediction
Dr. Peirong Ren

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Guest Editor
School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100811, China
Interests: fatigue crack growth; short fatigue cracks; fatigue life prediction

Special Issue Information

Dear Colleagues,

We are delighted to invite you to contribute to this upcoming Special Issue titled "Fatigue, Damage and Fracture of Alloys". This Special Issue aims to compile the latest advancements and findings in the field, providing a comprehensive overview of current research trends and future directions.

The field of the fatigue, fracture, and damage of alloys is crucial to numerous industries, including energy, aerospace, automotive, and structural engineering. Understanding the mechanisms and factors that influence these phenomena is essential for improving material performance and ensuring the safety and reliability of critical components. This Special Issue will cover a wide range of topics, including, but not limited to, low-cycle fatigue, high-cycle fatigue, thermomechanical fatigue, experimental investigations, theoretical modeling, and computational simulations. Contributions in the following categories will be considered for publication: original high-quality research papers, short communications, and review articles.

We kindly invite you to submit your manuscripts before the submission deadline. All submissions will undergo a rigorous peer review process to ensure the highest standards of quality and scientific rigor. Detailed guidelines for authors on the submission procedures can be found on our journal's website. We look forward to receiving your contributions to advancing our understanding of fatigue, fracture, and damage in alloys.

Yours faithfully,

Dr. Bingbing Li
Dr. Yajing Li
Dr. Peirong Ren
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

  • fatigue deformation
  • microstructure characterization
  • constitutive model
  • crack growth
  • life prediction
  • finite element simulation
  • multiaxial fatigue

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Published Papers (3 papers)

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Research

13 pages, 7368 KiB  
Article
Effects of High Temperature and High Pressure on the Photoluminescence of CdTe Quantum Dots: Implication for the High-Temperature Resistance Application of Nano-Stress Sensing Materials
by Jundiao Wang, Ke Bao, Yue Liu, Feihong Mao and Peirong Ren
Materials 2025, 18(4), 746; https://doi.org/10.3390/ma18040746 - 8 Feb 2025
Viewed by 494
Abstract
Nano-sized quantum dots (QDs) have the potential for the application of stress sensing materials based on their pressure-sensitive photoluminescence (PL) properties, while the influence of a more realistic loading environment on the PL characteristics of QDs under a high-temperature environment remains to be [...] Read more.
Nano-sized quantum dots (QDs) have the potential for the application of stress sensing materials based on their pressure-sensitive photoluminescence (PL) properties, while the influence of a more realistic loading environment on the PL characteristics of QDs under a high-temperature environment remains to be further studied. Herein, we studied the PL response of CdTe QDs under repetitive loading–unloading conditions under high-temperature coupling to explore the stability of its high temperature stress sensing potential. The results show that the CdTe QDs with size of 3.2 nm can detect pressure in the range of 0–5.4 GPa, and the pressure sensitivity coefficient of PL emission peak energy (EPL) is about 0.054 eV/GPa. Moreover, the relationship between EPL and pressure of CdTe QDs is not sensitive to high temperature and repeated loading, which meets the stability requirements of the sensing function required for stress sensing materials under high temperature. However, the disappearance of PL intensity caused by spontaneous growth as well as the ligand instability of QDs induced by high temperature/high pressure affects the availability of EPL, which has a great influence on the application of CdTe QDs as high-temperature-resistant nano-stress sensing materials. The research provides the mechanical luminescence response mechanism of CdTe QDs under high-temperature/high-pressure coupling conditions, which provides experimental support for the design of high-temperature/high-pressure-resistant QD structures. Full article
(This article belongs to the Special Issue Fatigue, Damage and Fracture of Alloys)
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17 pages, 5369 KiB  
Article
Isothermal and Thermomechanical Fatigue Behavior of 316LN Stainless Steel Under Torsional Loading
by Yiming Zheng, Fang Wang and Caijun Xu
Materials 2025, 18(3), 541; https://doi.org/10.3390/ma18030541 - 24 Jan 2025
Viewed by 601
Abstract
316LN austenitic stainless steel is extensively utilized within the domain of nuclear power, where its susceptibility to high-temperature fatigue and thermomechanical fatigue has emerged as a pivotal area of research for this material. Nevertheless, prior investigations have predominantly concentrated on axial loading outcomes, [...] Read more.
316LN austenitic stainless steel is extensively utilized within the domain of nuclear power, where its susceptibility to high-temperature fatigue and thermomechanical fatigue has emerged as a pivotal area of research for this material. Nevertheless, prior investigations have predominantly concentrated on axial loading outcomes, with a notable absence of studies examining its fatigue failure behavior under torsional loading conditions. The present study undertakes isothermal fatigue testing at temperatures of 450 °C, 550 °C, and 650 °C, along with thermomechanical fatigue testing across a temperature range of 350–550 °C, with strain amplitudes of 0.6%, 0.8%, and 1.2%. The findings reveal that secondary hardening observed under conditions of small deformation is primarily attributed to the enhancement of frictional stress, stemming from the accumulation of planar slip. Furthermore, as the temperature escalates, variations are observed in the intensity of the dynamic strain aging and the dislocation density within the material. Full article
(This article belongs to the Special Issue Fatigue, Damage and Fracture of Alloys)
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24 pages, 4196 KiB  
Article
Fatigue Life Prediction of 2024-T3 Clad Al Alloy Based on an Improved SWT Equation and Machine Learning
by Zhaoji Li, Weibing Dai, Haitao Yue, Chenguang Guo, Zijie Ji, Qiang Li and Jianzhuo Zhang
Materials 2025, 18(2), 332; https://doi.org/10.3390/ma18020332 - 13 Jan 2025
Viewed by 916
Abstract
The multi-parameter and nonlinear characteristics of the Smith Watson Topper (SWT) equation present considerable challenges for predicting the fatigue life of 2024-T3 clad Al alloy. To overcome these challenges, a novel model integrating traditional fatigue analysis methods with machine learning algorithms is introduced. [...] Read more.
The multi-parameter and nonlinear characteristics of the Smith Watson Topper (SWT) equation present considerable challenges for predicting the fatigue life of 2024-T3 clad Al alloy. To overcome these challenges, a novel model integrating traditional fatigue analysis methods with machine learning algorithms is introduced. An improved SWT fatigue life prediction equation is developed by incorporating key factors such as the mean stress effect, stress concentration factor, and surface roughness coefficient. Extreme gradient boosting, Random Forest, and their derived models are used to construct the fatigue life prediction model. The L-BFGS algorithm was then integrated with the established machine learning model to solve for the multi-parameter of the improved SWT equation. Thus, an accurate modified SWT prediction equation for 2024-T3 clad Al alloy was obtained. To further optimize the solution, the deep deterministic policy gradient and deep reinforcement learning algorithms are introduced to dynamically optimize the nonlinear equation, achieving a more efficient and accurate solution. The improved SWT fatigue life prediction equation and its solution method proposed in this study provide new insights for fatigue life prediction of clad metallic materials. Full article
(This article belongs to the Special Issue Fatigue, Damage and Fracture of Alloys)
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