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Feature Papers in Crystallography and Applications of Metallic Materials (2nd...
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Feature Papers in Crystallography and Applications of Metallic Materials (2nd Edition)

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Crystallography and Applications of Metallic Materials".

Deadline for manuscript submissions: 30 April 2025 | Viewed by 3169

Special Issue Editor

Prof. Dr. Joan-Josep Suñol

E-Mail Website
Guest Editor
Department of Physics, Campus Montilivi s/n, University of Girona, 17003 Girona, Spain
Interests: powder metallurgy; structural analysis; thermal analysis; mechanical alloying; nanocrystalline
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Metallic compounds are applied in automobile, biomedical, energy, and sustainability fields due to various mechanic, electrical, magnetic, and optical properties, as well as their resistance to corrosion and radiation. One of the aspects that influences its functional response the most is its microstructure. Therefore, the crystallographic characterization of metal alloys is of scientific and technological interest. One of the goals is to design the microstructure of advanced materials. This Special Issue is the second edition. This edition will be devoted to research work on metallic materials (steels, Co-based, Ni-based, Al-based, Ti-based, Cu-based, Fe-based, and so on) and the study of their microstructure and properties, based on searching for relationships between structure, properties, and applications. Review papers are welcomed. Likewise, manuscripts that explore the influence of composition and/or processing, including thermal annealing, applied pressure or electromagnetic field, are expected. Moreover, in addition to fundamental studies, more complex experimental studies that take into account crystallization, anisotropy, texture, and/or crystallographic defects and theoretical studies (ab initio, modeling, simulation, etc.) are also sought.

Prof. Dr. Joan-Josep Suñol
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

  • crystallography
  • X-ray diffraction
  • metals, metallic alloys, and compounds
  • microstructure
  • crystallization
  • dislocations
  • texture
  • crystallographic defects
  • anisotropy
  • solid-state transformations
  • mechanical and functional properties

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Related Special Issue

Published Papers (4 papers)

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Research

17 pages, 1824 KiB  
Article
Microstructural and Magnetic Characteristics of High-Entropy FeCoNiMnTi Alloy Produced via Mechanical Alloying
by Chérif Ben Ammar, Nawel Khitouni, Marzook Alshammari, Abdulrahman Alsawi, Mohamed Khitouni, Joan-Josep Suñol and Mahmoud Chemingui
Metals 2024, 14(11), 1302; https://doi.org/10.3390/met14111302 - 18 Nov 2024
Viewed by 362
Abstract
In the current study, X-ray diffraction, scanning electron microscopy, and vibrating sample magnetometer techniques were used to examine the impact of milling time on the microstructural and magnetic characteristics of Fe30Co20Ni20Mn20Ti10 (at%) produced via [...] Read more.
In the current study, X-ray diffraction, scanning electron microscopy, and vibrating sample magnetometer techniques were used to examine the impact of milling time on the microstructural and magnetic characteristics of Fe30Co20Ni20Mn20Ti10 (at%) produced via mechanical alloying. Results demonstrate that phase change is dependent on up to 30 h of milling. In terms of the hcp-Fe2Ti intermetallic and the BCC-FeCoNiMnTi supersaturated solid solution, the system maintains its two-phase structure at higher times. Additionally, the final average crystallite size was estimated to be approximately 10 nm, and the lattice strain was found to be between 0.95 and 1.15 %. As a function of milling time, the magnetic properties are discussed with the microstructural and crystallographic alterations. The collected powder after 100 h of milling has an Ms value of 28 emu/g and a Hc value of 25 Am−1, which is consistent with exceptional soft magnetics. This is essentially due to the Fe2Ti intermetallic and the BCC-Fe-based solid solution production, together with the refinement of the crystallite size. Furthermore, the presence of paramagnetic Ti atoms in solid solution and the development of high densities of defects and interfaces have been connected to the low value of Ms. Full article
(This article belongs to the Special Issue Feature Papers in Crystallography and Applications of Metallic Materials (2nd Edition))
16 pages, 3429 KiB  
Article
Enhancement of the Electrical Conductivity and Mechanical Properties of Al-Mg-Si and Al-Mg-Zn Ternary Systems After a T8 Heat Treatment
by Xóchitl Atanacio-Sánchez, Carlos Gamaliel Garay-Reyes, Alfredo Martínez-García, Ivanovich Estrada-Guel, José Manuel Mendoza-Duarte, Pedro Guerrero-Seañez, Sergio González-Sánchez, Enrique Rocha-Rangel, José de Jesús Cruz-Rivera, Emmanuel José Gutiérrez-Castañeda and Roberto Martínez-Sánchez
Metals 2024, 14(11), 1286; https://doi.org/10.3390/met14111286 - 13 Nov 2024
Viewed by 371
Abstract
The present research focuses on enhancing the mechanical properties and the electrical conductivity of alloys corresponding to the Al-Mg-Zn (two different compositions) and Al-Mg-Si systems, compared with the commercial 6201-T8 and 1350-H16 alloys, by using a novel approach based on T8 tempering (solution [...] Read more.
The present research focuses on enhancing the mechanical properties and the electrical conductivity of alloys corresponding to the Al-Mg-Zn (two different compositions) and Al-Mg-Si systems, compared with the commercial 6201-T8 and 1350-H16 alloys, by using a novel approach based on T8 tempering (solution heat treated, cold worked, then artificially aged). After T8 tempering, the Al-Mg-Zn and Al-Mg-Si alloy systems show a better combination of electrical and mechanical properties, with an enhancement of the electrical conductivity by about 2.8% compared to that of 1350 alloy and 13% higher than for the 6201 alloy series. All studied alloys exhibit better mechanical properties than 1350-H16 and are similar to those of 6201-T8. Full article
(This article belongs to the Special Issue Feature Papers in Crystallography and Applications of Metallic Materials (2nd Edition))
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22 pages, 13327 KiB  
Article
Efficient Representative Volume Element of a Matrix–Precipitate Microstructure—Application on AlSi10Mg Alloy
by Chantal Bouffioux, Luc Papeleux, Mathieu Calvat, Hoang-Son Tran, Fan Chen, Jean-Philippe Ponthot, Laurent Duchêne and Anne Marie Habraken
Metals 2024, 14(11), 1244; https://doi.org/10.3390/met14111244 - 1 Nov 2024
Viewed by 706
Abstract
In finite element models (FEMs), two- or three-dimensional Representative Volume Elements (RVEs) based on a statistical distribution of particles in a matrix can predict mechanical material properties. This article studies an alternative to 3D RVEs with a 2.5D RVE approach defined by a [...] Read more.
In finite element models (FEMs), two- or three-dimensional Representative Volume Elements (RVEs) based on a statistical distribution of particles in a matrix can predict mechanical material properties. This article studies an alternative to 3D RVEs with a 2.5D RVE approach defined by a one-plane layer of 3D elements to model the material behavior. This 2.5D RVE relies on springs applied in the out-of-plane direction to constrain the two lateral deformations to be compatible, with the goal of achieving the isotropy of the studied material. The method is experimentally validated by the prediction of the tensile stress–strain curve of a bi-phasic microstructure of the AlSi10Mg alloy. Produced by additive manufacturing, the sample material becomes isotropic after friction stir processing post treatment. If a classical plane strain 2D RVE simulation is clearly too stiff compared to the experiment, the predictions of the stress–strain curves based on 2.5D RVE, 2D RVE with no transversal constraint (called 2D free RVE), and 3D RVE simulations are close to the experiments. The local stress fields within a 2.5D RVE present an interesting similarity with 3D RVE local fields, but differences with the 2D free RVE local results. Since a 2.5D RVE simplifies one spatial dimension, the simulations with this model are faster than the 3D RVE (factor 2580 in CPU or taking into account an optimal parallel computation, a factor 417 in real time). Such a discrepancy can affect the FEM2 multi-scale simulations or the time required to train a neural network, enhancing the interest in a 2.5D RVE model. Full article
(This article belongs to the Special Issue Feature Papers in Crystallography and Applications of Metallic Materials (2nd Edition))
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23 pages, 4976 KiB  
Article
Mechanisms of Low-Temperature Dislocation Motion in High-Entropy Al0.5CoCrCuFeNi Alloy
by Yuri O. Semerenko, Vasilij D. Natsik, Elena D. Tabachnikova, Yi Huang and Terence G. Langdon
Metals 2024, 14(7), 778; https://doi.org/10.3390/met14070778 - 30 Jun 2024
Viewed by 1180
Abstract
An analysis of the processes of plastic deformation and acoustic relaxation in a high-entropy alloy, Al0.5CoCrCuFeNi, was carried out. The following were established: dominant dislocation defects; types of barriers that prevent the movement of dislocations; mechanisms of thermally activated movement of [...] Read more.
An analysis of the processes of plastic deformation and acoustic relaxation in a high-entropy alloy, Al0.5CoCrCuFeNi, was carried out. The following were established: dominant dislocation defects; types of barriers that prevent the movement of dislocations; mechanisms of thermally activated movement of various elements of dislocation lines through barriers at room and low temperatures. Based on modern dislocation theory, quantitative estimates were obtained for the most important characteristics of dislocations and their interaction with barriers. Full article
(This article belongs to the Special Issue Feature Papers in Crystallography and Applications of Metallic Materials (2nd Edition))
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