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Crystals
Special Issues
Manufacturing, Welding, Testing and Applications of the Advanced Materials
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Manufacturing, Welding, Testing and Applications of the Advanced Materials

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

Deadline for manuscript submissions: closed (22 July 2024) | Viewed by 3333

Special Issue Editors

Prof. Dr. Alexis Rusinek

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Guest Editor
LEM3 - Laboratory of Microstructure Studies and Mechanics of Materials, UMR-CNRS 7239, Lorraine University, 7 rue Félix Savart, BP 15082, CEDEX 03, 57073 Metz, France
Interests: dynamic behaviour of materials; constitutive relations; elastic wave propagation; fracture; experiments; simulations
Special Issues, Collections and Topics in MDPI journals
Dr. László Tóth

E-Mail Website
Guest Editor
Bánki Donát Faculty of Mechanical and Safety Engineering, Institute of Materials and Manufacturing Sciences, Óbuda University, Népszínház u.8., 1081 Budapest, Hungary
Interests: heat treatment; metallic materials; material sciences; mechanical properties; microstructure; wear; surface properties; coatings; biomaterials; corrosion
Special Issues, Collections and Topics in MDPI journals
Dr. Tünde Anna Kovács

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Guest Editor
Donát Bánki Faculty of Mechanical and Safety Engineering, Óbuda University, 1081 Budapest, Hungary
Interests: material sciences; welding; material testing; coatings; corrosion and wear phenomena
Dr. Zoltán Nyikes

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Guest Editor
Department of Informatics, Milton Friedman University, Kelta u.2., 1039 Budapest, Hungary
Interests: INDUSTRY 4.0; protection coatings; explosive load effects; rail transport
Dr. Enkő Bitay

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Guest Editor
Faculty of Technical and Human Sciences, Sapientia Hungarian University of Transylvania, Târgu Mureş, Cluj-Napoca, Romania
Interests: material sciences; biomaterials; surface traitments; laser technologies

Special Issue Information

Dear Colleagues,

Material properties determine their applicability. Additionally, we can design materials for special applications as a function of the required mechanical, chemical, electrical, and other properties and working conditions. The advanced materials are metals, polymers, composites, and ceramics for special applications. The testing of the materials is an essential way to know their properties. For advanced materials, we can use standardized tests, but it can require designing a new testing process.

Advanced materials can be a special chemical composition or special manufacturing f.ex. additive technology or heat treated to earn a special microstructure. Material designing and testing for a special application are necessary nowadays. The special application work condition can be the corrosive media, high wearing load or electromagnetic radiation. The special application work condition can be corrosive media, high wearing load, electromagnetic radiation, or other special loads.

  • Experimental characterization of advanced materials when subjected to special conditions.
  • Synthesis and characterization of improved materials to withstand special working conditions.
  • New methods of synthesizing advanced materials for working in special environments.
  • Computational simulation of advanced materials when subjected to special conditions

Thus, we are pleased to invite you to submit your work for this Special Issue, to assemble a collection of in-depth discussions and reflections on this fascinating and important topic for the development of science and technology.

Prof. Dr. Alexis Rusinek
Dr. László Tóth
Dr. Tünde Anna Kovács
Dr. Zoltán Nyikes
Dr. Enkő Bitay
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

  • advanced manufacturing
  • welding
  • material testing
  • surface treating
  • wear
  • corrosion
  • electromagnetic radiation

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

Published Papers (2 papers)

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Research

11 pages, 2119 KiB  
Article
Microstructural Control by Cooling Rate in β-type and Sintered Ti-3.6Fe-5Zr-0.2B (Mass%) Alloy Fabricated by Spark Plasma Sintering and Heat Treatment
by Tomoyuki Homma and Takashi Washizu
Crystals 2023, 13(8), 1184; https://doi.org/10.3390/cryst13081184 - 29 Jul 2023
Viewed by 1140
Abstract
The β-type and sintered Ti-3.6Fe-5Zr-0.2B (mass%) alloy has been consolidated by spark plasma sintering, followed by a β solution treatment (ST). In order to obtain a high-strength ductile balance, water quenching or air cooling is used after ST. Modification of sintering conditions, which [...] Read more.
The β-type and sintered Ti-3.6Fe-5Zr-0.2B (mass%) alloy has been consolidated by spark plasma sintering, followed by a β solution treatment (ST). In order to obtain a high-strength ductile balance, water quenching or air cooling is used after ST. Modification of sintering conditions, which leads to 100% of the relative density, improves the tensile ductility. The Fe addition causes a large local lattice and compressive strain to the bcc Ti lattice; in the water-quenched sample, α” martensite phases appear in the β matrix. When air cooling is applied after the ST, bimodal α lath phases are instead precipitated during the cooling in nanoscale, and the formation of α” martensite phases is suppressed. This results in high strength and better ductility when compared with those in the water-quenched sample, particularly in tensile properties. The air-cooled sample reveals attractive mechanical properties in both tension and compression modes. Full article
(This article belongs to the Special Issue Manufacturing, Welding, Testing and Applications of the Advanced Materials)
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12 pages, 8408 KiB  
Article
Femtosecond Laser Surface Cleaning for Diamond Segmented Drill Bit Manufacturing
by Attila Zsolt Kenéz, Éva Lublóy, Gyula Bagyinszki and Tamás Földes
Crystals 2023, 13(4), 672; https://doi.org/10.3390/cryst13040672 - 13 Apr 2023
Cited by 2 | Viewed by 1566
Abstract
Microsecond and nanosecond lasers have been studied in the past for laser cleaning applications and, today, femtosecond lasers are also being used successfully for removing paint, rust, and surface contamination. For diamond segmented drill bits, it may be also necessary to improve the [...] Read more.
Microsecond and nanosecond lasers have been studied in the past for laser cleaning applications and, today, femtosecond lasers are also being used successfully for removing paint, rust, and surface contamination. For diamond segmented drill bits, it may be also necessary to improve the mechanical properties of the laser-welded joint, i.e., to increase the tensile strength and toughness. Therefore, in this study, we investigated the possibility of using femtosecond lasers to clean the surface before laser welding to see what effect it has on the mechanical properties of the joint. The end surface of the thin-walled tube was pretreated to remove grease and oil before laser-beam welding a powder metallurgical segment onto it and the results are compared to an untreated sample. The laser-welded seams were investigated by micro-computer tomography, break-out test, and optical microscopy. Any defects in the seams were analyzed and, according to the results obtained in this study, no cracks were found by computer tomography, a shade of grey diagram shows, and all the pre-treated samples had a higher absorption than the untreated sample. Four of the six treating parameters had a significant effect, +30% on average, and two treating parameters had a positive effect, +13.5% on average, compared to the untreated sample. In addition, the break-out values showed that only one treating parameter had a significantly, +19%, higher effect than the other treating parameters. This test showed different results from the micro-CT scan. The optimal process parameters for oil and grease removal are discussed in the conclusion. Full article
(This article belongs to the Special Issue Manufacturing, Welding, Testing and Applications of the Advanced Materials)
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