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Fracture and Fatigue in Metals and Alloys
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Fracture and Fatigue in Metals and Alloys

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

Deadline for manuscript submissions: 10 February 2025 | Viewed by 1207

Special Issue Editors

Dr. Shengci Li

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China
Interests: fatigue crack growth; plastic deformation; aluminum; high strength steel; addictive manufacture
Dr. Reza Molaei

E-Mail Website
Guest Editor
Department of Mechanical Engineering, The University of Memphis, Memphis, TN 38152, USA
Interests: multiaxial fatigue; fracture mechanics; additive manufacturing
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Zhigang Wang

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China
Interests: development of rare earth metal structural materials; research on long life of metal materials under extreme service conditions
Dr. Erfan Maleki

E-Mail Website
Guest Editor
1. National Center for Additive Manufacturing Excellence (NCAME), Auburn University, Auburn, AL 36849, USA
2. Department of Mechanical Engineering, Auburn University, Auburn, AL 36849, USA
Interests: fatigue and fracture mechanics; additive manufacturing; crack initiation; surface treatments
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Fatigue and fracture are the main failure forms in material service. The research on fatigue and fracture involves important industries and key fields such as material research and development, mechanical manufacturing, modern transportation, infrastructure construction, petrochemicals, and aerospace. Therefore, the purpose of this Special Issue is to share the latest technological achievements and jointly explore the hot and difficult issues in the field of fatigue and fracture. In this Special Issue, the following areas are fully considered: fatigue and fracture mechanics, fatigue and fracture micro-mechanisms, failure theory research of materials and structures, fatigue of steel used for basic parts, damage failure and life prediction of equipment in the whole life cycle, fatigue and fracture engineering application in key industries, fatigue chemical coupling failure mechanism and prevention and control, new progress and new technology in the field of fatigue and fracture, etc.

Dr. Shengci Li
Dr. Reza Molaei
Prof. Dr. Zhigang Wang
Dr. Erfan Maleki
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 behavior
  • fatigue life
  • fracture failure
  • fracture mechanism
  • metal structural materials

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Published Papers (2 papers)

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Research

14 pages, 3883 KiB  
Article
Enhanced Hardness and Tribological Properties of Copper-Based Steel Backing Self-Lubricating Materials with Y2O3 Micro-Doping
by Mingmao Li, Ningkang Yin, Zhaokui Jei, Zhiying Liu, Jinhan Zhang, Hao Zeng, Hao Huang and Jingxuan Liu
Materials 2025, 18(3), 560; https://doi.org/10.3390/ma18030560 - 26 Jan 2025
Viewed by 290
Abstract
The copper-based steel backing material is prepared using a combination of mechanical alloying and secondary sintering methods. The effect of Y2O3 content on the microstructure, hardness, and tribological properties of the copper-based self-lubricating layer is investigated. The results demonstrate that [...] Read more.
The copper-based steel backing material is prepared using a combination of mechanical alloying and secondary sintering methods. The effect of Y2O3 content on the microstructure, hardness, and tribological properties of the copper-based self-lubricating layer is investigated. The results demonstrate that the addition of Y2O3 enhances the strength of the copper-based self-lubricating layer. Graphite and Y2O3 act synergistically to form a three-dimensional supporting framework, thereby boosting the overall strength of the copper-based composite material and increasing its Brinell hardness by 27%. Additionally, the incorporation of Y2O3 effectively improves the tribological properties of the composite material, significantly reducing wear during the friction process and decreasing the wear rate by 77%. Under the experimental conditions, the optimal Y2O3 content is determined to be 1 wt%. Full article
(This article belongs to the Special Issue Fracture and Fatigue in Metals and Alloys)
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18 pages, 13796 KiB  
Article
In Situ EBSD Observation and Numerical Simulation of Microstructure Evolution and Strain Localization of DP780 Dual-Phase Steel
by Yupeng Ren, Shengci Li, Shaohua Feng, Yang Li and Changwang Yuan
Materials 2025, 18(2), 426; https://doi.org/10.3390/ma18020426 - 17 Jan 2025
Viewed by 391
Abstract
To reveal the microstructural evolution and stress–strain distribution of 780 MPa-grade ferrite/martensite dual-phase steel during a uniaxial tensile deformation process, the plastic deformation behavior under uniaxial tension was studied using in situ EBSD and crystal plastic finite element method (CPFEM). The results showed [...] Read more.
To reveal the microstructural evolution and stress–strain distribution of 780 MPa-grade ferrite/martensite dual-phase steel during a uniaxial tensile deformation process, the plastic deformation behavior under uniaxial tension was studied using in situ EBSD and crystal plastic finite element method (CPFEM). The results showed that the geometrically necessary dislocations (GND) in ferrite accumulated continuously, which is conducive to the formation of grain boundaries, but the texture distribution did not change significantly. The average misorientation angle decreased and the proportion of low-angle grain boundaries increased with the increase of strain. At high strain, the plastic deformation mainly occurred in the soft ferrite region within a 45° distribution from the loading direction. In the undeformed state, the texture of the dual-phase steel was characterized by α-fibers and γ-fibers. Interfacial debonding was caused by the accumulation of geometrically necessary dislocations. The fracture morphologies showed that the specimens had typical ductile fracture characteristics. Full article
(This article belongs to the Special Issue Fracture and Fatigue in Metals and Alloys)
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