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Crystals
Special Issues
Microstructural Characterization and Property Analysis of Alloys
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Microstructural Characterization and Property Analysis of Alloys

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

Deadline for manuscript submissions: 15 February 2025 | Viewed by 1848

Special Issue Editor

Dr. Lei Wang

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Guest Editor
Key Laboratory for Anisotropy and Texture of Material (Ministry of Education), School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
Interests: crystal growth; dielectric material; photoelectric properties; optical and magnetic properties; microstructural characterization; anisotropy studies

Special Issue Information

Dear Colleagues,

Microstructural characterization and property analysis of alloys involve a number of disciplines, including materials science, physics and chemistry, and aim to extensively explore the influence of the microstructure of alloys on their macroscopic properties. In this Special Issue, we will introduce the applications of alloy microstructural characterization and property analysis in aerospace, transportation, energy and environmental protection, biomedicine and other fields with practical cases to demonstrate their important roles in practical engineering and scientific research. At the same time, we will also focus on the cutting-edge developments in the field of microstructural characterization and property analysis of alloys, share the latest research results and technological advances, and provide readers with useful references. By reading this Special Issue, you will learn the basic concepts, methodological principles and application cases of microstructural characterization and property analysis of alloys, which will help you to improve your professionalism and research level in related fields. At the same time, this Special Issue will also provide a platform for you to communicate and share experiences with your peers, and jointly promote the development of the field of alloy microstructural characterization and property analysis.

Dr. Lei Wang
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. 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

  • microstructural characterization
  • alloys
  • performance analysis
  • materials science
  • material performance optimization
  • crystallography

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

Published Papers (3 papers)

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Research

14 pages, 5218 KiB  
Article
Very-High-Cycle Fatigue Behaviors for Bearing Steel Microstructural Transformation
by Seung-Hoon Nahm, Sang-Koo Jeon, Dong-Kyun Kim, Min-Soo Suh and Chang-Min Suh
Crystals 2024, 14(12), 1040; https://doi.org/10.3390/cryst14121040 - 29 Nov 2024
Viewed by 494
Abstract
It has been reported that the multiphase structure with martensite and a mixed structure obtained by the quenching and tempering of bearing steel shows high strength and ductility. However, there appears to be no study on the effects of very-high-cycle fatigue (VHCF) and [...] Read more.
It has been reported that the multiphase structure with martensite and a mixed structure obtained by the quenching and tempering of bearing steel shows high strength and ductility. However, there appears to be no study on the effects of very-high-cycle fatigue (VHCF) and ultrasonic nanocrystal surface modification (UNSM) of a new bearing steel required for the durability design of next-generation bearing steel. This study analyzed the characteristics of microstructure transformation associated with heat treatment cycles and studied and evaluated the fatigue strength characteristics by the UNSM. Fisheye cracks occur from small inclusions inside the specimen only in martensitic microstructure materials in the long-life range. And the characteristic of a double S-N curve in which the fatigue limit decreased in two stages appeared. However, fisheye cracks and double S-N curves did not appear in pearlite and mixed-structure materials. Full article
(This article belongs to the Special Issue Microstructural Characterization and Property Analysis of Alloys)
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15 pages, 4610 KiB  
Article
The Influence of the Degree of Tension and Compression of Copper on the Indentation Size Effect (ISE)
by Peter Blaško, Jozef Petrík, Marek Šolc, Mária Mihaliková, Lenka Girmanová and Jarmila Trpčevská
Crystals 2024, 14(11), 913; https://doi.org/10.3390/cryst14110913 - 22 Oct 2024
Viewed by 560
Abstract
The present work deals with the relationship between the degree of cold plastic deformation (up to 55.3% in the neck area in the tensile test and up to 66.6% in the compression test) and the parameters of the Indentation Size Effect (ISE). The [...] Read more.
The present work deals with the relationship between the degree of cold plastic deformation (up to 55.3% in the neck area in the tensile test and up to 66.6% in the compression test) and the parameters of the Indentation Size Effect (ISE). The tested material consists of 97% wrought copper. The Hanemann tester (Carl Zeiss, Jena, Germany) was used to measure micro-hardness. The loads applied during the micro-hardness test were between 0.09807 N and 0.9807 N. The influence of the load on the degree of the micro-hardness and simultaneously on the ISE, expressed by the Meyer’s index n, was significant. The influence of load on the ISE parameters was also evaluated using the Meyer’s index n, the PSR method, and the Hays–Kendall approach. For the undeformed sample, the Meyer’s index was close to 2, with the increase in the degree of tensile and compressive deformation increasing its “reverse” character (n > 2). Full article
(This article belongs to the Special Issue Microstructural Characterization and Property Analysis of Alloys)
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15 pages, 51500 KiB  
Article
The Effects of Laser Parameters on the Wear Resistance of a Cu/BN Remelted Layer
by Hengzheng Li, Shuai Chen, Yang Chen, Yan Liu, Zichen Tao, Yinghe Qin and Conghu Liu
Crystals 2024, 14(9), 809; https://doi.org/10.3390/cryst14090809 - 13 Sep 2024
Viewed by 542
Abstract
In order to improve the wear resistance of copper and enhance the surface properties of copper parts, this article uses BN nanoparticles as a reinforcing phase and the laser remelting method to prepare a Cu/BN remelted layer on the copper surface. The surface [...] Read more.
In order to improve the wear resistance of copper and enhance the surface properties of copper parts, this article uses BN nanoparticles as a reinforcing phase and the laser remelting method to prepare a Cu/BN remelted layer on the copper surface. The surface morphology, crystal structure, microhardness, and wear resistance of the samples were tested and characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), a microhardness tester, and a friction and wear tester. The effects of laser frequency, pulse width, and energy density on the surface morphology and wear resistance of the samples were analyzed and studied, and the effects of the laser parameters on the properties of the Cu/BN remelted layer were discussed. The research results indicate that laser frequency, pulse width, and energy density have a direct impact on the surface morphology and properties of the Cu/BN remelted layer, but the impact mechanism by the above parameters on the remelted layer is different. The effects of laser frequency on the remelted layer are caused by changes in the overlap mode of the remelting points, while laser pulse width and energy density are achieved through changes in remelting intensity. When the laser frequency is 10 Hz, the pulse width is 10 ms, and the energy density is 165.8 J/mm2, the Cu/BN remelted layer has better surface properties. Full article
(This article belongs to the Special Issue Microstructural Characterization and Property Analysis of Alloys)
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