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Metals
Special Issues
Fatigue, Damage and Fracture of Metallic Materials
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Fatigue, Damage and Fracture of Metallic Materials

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Failure Analysis".

Deadline for manuscript submissions: 15 August 2024 | Viewed by 2090

Special Issue Editor

Dr. Wei Li

E-Mail Website
Guest Editor
School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Interests: very high cycle fatigue; additive manufacturing effect; crack nucleation and growth mechanisms; fatigue reliability modeling

Special Issue Information

Dear Colleagues,

It is well known that 50 to 90 percent of all mechanical failures for metallic structures or components are due to unexpected fatigue failure. To ensure the long-term safety and reliability of metallic structures or components, therefore, it is crucial to thoroughly understand the mechanisms governing the fatigue of metallic materials, and to constantly develop novel fatigue design models or approaches for improving the structural integrity of mechanical products in engineering.

This Special Issue focuses on fatigue, damage and fracture of metallic materials, and the emphasis is placed on the fatigue properties of metallic materials and their behavior when influenced by structure, process and environment. A broad range of topics covered in the Special Issue include state-of-the-art fatigue concepts, novel fatigue testing and characterization methods, complicated loading and environmental effects, modeling of crack nucleation and growth related to microstructure, analysis methods based on data science, fatigue assessment at small scales, novel life prediction methods and so on. Additionally, papers outlining the fundamental development trends of metallic materials in the fatigue field are encouraged. Please note that the metallic materials discussed in the Special Issue not only include the existing metallic materials, but also involve the newly emerging metallic materials (e.g., additive manufacturing metallic materials).

We sincerely invite you to contribute your research work in this Special Issue.

Dr. Wei Li
Guest Editor

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. Metals 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 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

  • microstructure characteristics
  • constitutive relation
  • crack nucleation and growth
  • failure analysis
  • environmental effect
  • manufacturing mode
  • defect effect
  • numerical modeling
  • life prediction
  • reliability evaluation

Published Papers (2 papers)

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Research

15 pages, 5872 KiB  
Article
The Effect of Defect Characteristics on Prediction of Fatigue Life of TC4 Titanium Alloy Welded Joints
by Yupeng Guo, Furong Chen, Mingkai Li, Huan Yu, Wei Li and Hailong Deng
Metals 2023, 13(9), 1540; https://doi.org/10.3390/met13091540 - 31 Aug 2023
Cited by 2 | Viewed by 787
Abstract
The size and depth of defects significantly affect fatigue performance; the main purpose of this article is to clarify the effect of stress correction factors caused by defects on the fatigue life of α + β Type titanium alloy welded joints. In order [...] Read more.
The size and depth of defects significantly affect fatigue performance; the main purpose of this article is to clarify the effect of stress correction factors caused by defects on the fatigue life of α + β Type titanium alloy welded joints. In order to investigate the fatigue characteristics of α + β Type titanium alloy welded joints, axial constant amplitude loading fatigue tests were performed with a stress ratio of −1. The test results show that the fatigue life continues to increase as the stress amplitude decreases, and the failure modes can be classified into two types: interior failure and surface failure. A fatigue parameter (λ) determined by both defect depth and size was proposed which allowed for a good generalization of the data point distribution in short and long-life regions. The stress correction factor (W) related to the S–N characteristics was constructed by combining the λ and average defect size, and it effectively improved the dispersion of the test data. Continuing, the fatigue life prediction model was established under the condition that the defect type and size can be estimated or detected on the basis of the dislocation energy method. The results indicated that the evaluated values of the new life model associated with W are in good agreement with the test results. Full article
(This article belongs to the Special Issue Fatigue, Damage and Fracture of Metallic Materials)
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14 pages, 2912 KiB  
Article
Pearlite Interlamellar Spacing and Vickers Micro-Hardness in the Necking Region of Cold-Drawn Pearlitic Steel Wires
by Jesús Toribio, Francisco-Javier Ayaso and Rocío Rodríguez
Metals 2023, 13(8), 1401; https://doi.org/10.3390/met13081401 - 05 Aug 2023
Viewed by 813
Abstract
The final aim of this paper is to study the microstructural changes in the necking region of progressively cold-drawn pearlitic steel wires by means of a thorough and detailed analysis of pearlite interlamellar spacing and Vickers micro-hardness in this special region. To this [...] Read more.
The final aim of this paper is to study the microstructural changes in the necking region of progressively cold-drawn pearlitic steel wires by means of a thorough and detailed analysis of pearlite interlamellar spacing and Vickers micro-hardness in this special region. To this end, a set of progressively cold-drawn pearlitic steel wires belonging to a real manufacturing chain were subjected to standard tension tests, in such a manner that the tests were interrupted before the final fracture, i.e., the test development was aborted just at the necking instant. The microstructural changes during necking were evaluated by measuring the pearlite interlamellar spacing in the necking region, as well as the Vickers micro-hardness in the different points of it. The study of the afore-said microstructural changes preceding the final fracture was the final aim of the research, intending to determine the local areas in the necking region of the specimens in which microstructural changes are most evident, thereby affecting the local mechanical response of a specific cold-drawn steel at the moment of instability under load control during the standard tension test. Full article
(This article belongs to the Special Issue Fatigue, Damage and Fracture of Metallic Materials)
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