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Crystals
Special Issues
Recent Advances in Microstructure and Properties of Metals and Alloys
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Recent Advances in Microstructure and Properties of Metals and Alloys

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystalline Metals and Alloys".

Deadline for manuscript submissions: 20 June 2025 | Viewed by 1459

Special Issue Editors

Dr. Marzena Lachowicz

E-Mail Website
Guest Editor
Department of Metal Forming, Welding and Metrology, Wroclaw University of Science and Technology, Lukasiewicza 5 Street, 50-370 Wroclaw, Poland
Interests: corrosion; metallography; microstructure; metals; mechanical properties; SEM; light microscopy
Dr. Erdem Karakulak

E-Mail Website
Guest Editor
Brunel Centre for Advanced Solidification Technology, Brunel University London, Uxbridge UB8 3PH, UK
Interests: solidification of metals; aluminium alloys; magnesium alloys; casting of metals; mechanical properties of metallic materials; microstructure
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Metallic materials are polycrystalline materials widely used in the production of many elements and engineering structures. The microstructure and technological production process of alloys are fundamental determinants of their mechanical, thermal, and electrical properties and, in many cases, constitute a major limiting factor in their use in many industrial applications. This Special Issue aims to provide a comprehensive analysis of the latest research in the field of metals, their alloy microstructures, and their implications for material performance. The continuous development of manufacturing processes means that research on these issues is still current.

This Special Issue will present the latest achievements in testing the properties of metallic materials produced using various manufacturing technologies, including heat treatment, as well as considerations regarding the relationship between innovative technological parameters, manufacturing technologies, and welding and production methods, the microstructure whose evolution they influence, and the properties of the obtained products.

This Special Issue on “Recent Advances in Microstructure and Properties of Metals and Alloys” serves as a valuable resource for materials scientists, engineers, and technologists, offering a deeper understanding of the complex interplay between alloys’ microstructures and their properties.

Dr. Marzena Lachowicz
Dr. Erdem Karakulak
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. Crystals 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 2100 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 characterization
  • phase transformations
  • material properties
  • mechanical properties
  • corrosion resistance
  • manufacturing technology

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (2 papers)

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13 pages, 5853 KiB  
Article
Crystallographic Orientation of Grains Formed in the Laser Melt-Pool of (CoCuFeZr)17Sm2 Anisotropic Permanent Magnets
by Felix Trauter, Ralf Loeffler, Gerhard Schneider and Dagmar Goll
Crystals 2024, 14(11), 955; https://doi.org/10.3390/cryst14110955 - 31 Oct 2024
Viewed by 472
Abstract
Textured microstructures and anisotropic properties are key factors for the optimization of magnetic materials. Only for high texture grades can the remanence Jr and the maximum energy product (BH)max be maximized. In additive manufacturing such as laser powder bed fusion (PBF-LB), [...] Read more.
Textured microstructures and anisotropic properties are key factors for the optimization of magnetic materials. Only for high texture grades can the remanence Jr and the maximum energy product (BH)max be maximized. In additive manufacturing such as laser powder bed fusion (PBF-LB), methods to achieve texture have to be developed. In this work, anisotropic (CoCuFeZr)17Sm2 sintered magnets have been used as a substrate in experiments featuring single laser tracks to study the relationships between crystallographic orientation of the substrate grains and crystallographic orientation of grain growth in the melt-pool. The <0001> crystal direction (c-axis) of the substrate has been systematically varied with respect to the orientation of the laser scan track on the specimen surface. Crystallographic orientations of the melt-pool and the substrate have been analyzed using electron backscatter diffraction (EBSD). It is found that if the c-axis is oriented perpendicular to the temperature gradient in the melt-pool, grains grow with orientation similar to that of the substrate grain. If the c-axis and the temperature gradient are oriented in the same direction, the grains grow with high misorientation to the substrate. The highest anisotropy in the melt-pool is achieved when the substrate’s c-axis is oriented along the laser scan track. Under these conditions, 98.7% of the melt-pool area shows a misorientation <45° compared to the substrate orientation. The texture grade of the melt-pool area is comparable to that of the substrate magnet, at 91.8% and 92.2%, respectively. Full article
(This article belongs to the Special Issue Recent Advances in Microstructure and Properties of Metals and Alloys)
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13 pages, 18696 KiB  
Article
Effect of Primary γ′ Phase on High-Temperature Endurance Performance of GH4720Li Superalloy
by Xing Zhou, Ruifeng Dong, Yuchang Xie, Shuoqi Hu, Tianyuan Xu, Jian Li and Wei Zhang
Crystals 2024, 14(10), 851; https://doi.org/10.3390/cryst14100851 - 28 Sep 2024
Viewed by 705
Abstract
To investigate the effect of the primary γ′ phase on the high-temperature endurance performance of GH4720Li superalloy, samples with different volume fractions of the primary γ′ phase were prepared by adjusting the heat treatment process. The high-temperature endurance performance was tested, and the [...] Read more.
To investigate the effect of the primary γ′ phase on the high-temperature endurance performance of GH4720Li superalloy, samples with different volume fractions of the primary γ′ phase were prepared by adjusting the heat treatment process. The high-temperature endurance performance was tested, and the microstructure was examined. Results indicate that samples with a higher volume fraction of the γ′ phase exhibit a greater stress rupture life. Additionally, alloy samples with varying γ′ phase volume fractions show improved plasticity and toughness at 760 °C/530 MPa. Fracture morphology results reveal that high-volume-fraction primary γ′ phase samples primarily undergo transgranular fracture, whereas low-volume-fraction samples exhibit intergranular fracture due to grain boundary sliding. During high-temperature endurance, the secondary γ′ phase in the crystal is affected. Long-term aging refines the secondary γ′ phase, resulting in a more uniform distribution. Finally, the influence of the primary γ′ phase and the creep behavior of each material group on high-temperature endurance performance are discussed. Full article
(This article belongs to the Special Issue Recent Advances in Microstructure and Properties of Metals and Alloys)
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