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Microstructure, Mechanical Properties, and Biomedical Applications of Magnesium-Based Alloys
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Microstructure, Mechanical Properties, and Biomedical Applications of Magnesium-Based Alloys

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

Deadline for manuscript submissions: closed (20 May 2022) | Viewed by 9293

Special Issue Editors

Prof. Dr. Dmitry Lvovich Merson

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Guest Editor
Togliatti State University, Tolyatti, Russian Federation
Interests: fabrication of magnesium alloys; surface treatment and coatings; acoustic emission; mechanical properties; corrosion resistance; biomedical applications
Prof. Dr. Alexei Vinogradov

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Guest Editor
Department of Engineering Design and Materials, Norwegian University of Science and Technology, Trondheim, Norway
Interests: advanced materials; ultrafine grained and nano-structured materials; strength and ductility; deformation mechanisms; constitutive modelling; microstructure characterisation; fatigue; corrosion
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Yoshihito Kawamura

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Guest Editor
Kumamoto University, Kumamoto, Japan
Interests: high performance magnesium alloys; processing; LPSO structure; heterogeneous materials; microstructure; mechanical properties; corrosion properties; thermal properties; deformation mechanisms; biomedical applications

Special Issue Information

Dear Colleagues,

Magnesium (Mg) alloys have long been favorable to medical applications as temporary structures in orthopedic and cardiovascular surgery due to their reasonably low elastic moduli, light weight, and excellent specific strength and fatigue resistance paired with outstanding biodegradability and bioresorbability. On their way to biomedical applications, magnesium alloys are facing many challenges, including but not limited to a higher than desired degradation rate and lower than desired mechanical performance affected by the biological environment, leading to structural integrity issues and premature failures. The research in this multidisciplinary field is burgeoning, and the rapid progress is still continuing.

This Special Issue in Materials seeks to highlight recent successes and developments in magnesium-based alloys and related topics addressing the above challenges and introducing innovative strategies to mitigate the current limitations of magnesium-based materials aimed at biomedical applications. Manuscripts dealing with the synthesis of novel magnesium-based materials, including alloys, composites and coatings, their microstructure, multifunctional properties, novel applications, and design are welcome. It is our pleasure to invite full papers, short communications, and reviews covering these topics in their entirety.

Prof. Dr. Dmitry Lvovich Merson
Prof. Dr. Alexei Vinogradov
Prof. Dr. Yoshihito Kawamura
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

  • magnesium alloys
  • processing
  • biomedical applications
  • microstructure
  • texture
  • corrosion
  • mechanical properties
  • fatigue and corrosion fatigue
  • surface treatment and coatings

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Published Papers (3 papers)

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Research

17 pages, 12605 KiB  
Article
Laser Powder Bed Fusion Applied to a New Biodegradable Mg-Zn-Zr-Ca Alloy
by Radu Emil Hendea, Doina Raducanu, Anna Nocivin, Steliana Ivanescu, Doina Stanciu, Corneliu Trisca-Rusu, Radu Septimiu Campian, Silviu Iulian Drob, Vasile Danut Cojocaru and Bogdan Mihai Gălbinașu
Materials 2022, 15(7), 2561; https://doi.org/10.3390/ma15072561 - 31 Mar 2022
Cited by 4 | Viewed by 2179
Abstract
The aim of the present paper is to apply the laser powder bed fusion process to a new biodegradable Mg-Zn-Zr-Ca alloy powder prepared via a mechanical alloying method from powder pure components. This additive manufacturing method is expected to allow for the obtaining [...] Read more.
The aim of the present paper is to apply the laser powder bed fusion process to a new biodegradable Mg-Zn-Zr-Ca alloy powder prepared via a mechanical alloying method from powder pure components. This additive manufacturing method is expected to allow for the obtaining of high biomechanical and biochemical performance. Various processing parameters for laser powder bed fusion are tested, with a special focus on laser energy density—E [J/mm3]—which is calculated for all experiment variants, and which represents an important processing parameter, dependent upon all the rest. The goal of all the trials is to find the most efficient schema for the production of small biodegradable parts for the medical domain, meaning the selection of optimal processing parameters. An important observation is that the most robust and homogeneous samples without cracks are obtained for lower values of the E, around 100 J/mm3. Thus, the most performant samples are analyzed by scanning electron microscopy, X-ray diffraction and by compression mechanical test. Full article
(This article belongs to the Special Issue Microstructure, Mechanical Properties, and Biomedical Applications of Magnesium-Based Alloys)
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19 pages, 5073 KiB  
Article
Enhancing the Mechanical Properties of Biodegradable Mg Alloys Processed by Warm HPT and Thermal Treatments
by Andrea Mizelli-Ojdanic, Jelena Horky, Bernhard Mingler, Mattia Fanetti, Sandra Gardonio, Matjaz Valant, Bartosz Sulkowski, Erhard Schafler, Dmytro Orlov and Michael J. Zehetbauer
Materials 2021, 14(21), 6399; https://doi.org/10.3390/ma14216399 - 25 Oct 2021
Cited by 5 | Viewed by 3113
Abstract
In this study, several biodegradable Mg alloys (Mg5Zn, Mg5Zn0.3Ca, Mg5Zn0.15Ca, and Mg5Zn0.15Ca0.15Zr, numbers in wt%) were investigated after thermomechanical processing via high-pressure torsion (HPT) at elevated temperature as well as after additional heat treatments. Indirect and direct analyses of microstructure revealed that the [...] Read more.
In this study, several biodegradable Mg alloys (Mg5Zn, Mg5Zn0.3Ca, Mg5Zn0.15Ca, and Mg5Zn0.15Ca0.15Zr, numbers in wt%) were investigated after thermomechanical processing via high-pressure torsion (HPT) at elevated temperature as well as after additional heat treatments. Indirect and direct analyses of microstructure revealed that the significant strength increases arise not only from dislocations and precipitates but also from vacancy agglomerates. By contrast with former low-temperature processing routes applied by the authors, a significant ductility was obtained because of temperature-induced dynamic recovery. The low initial values of Young’s modulus were not significantly affected by warm HPT-processing. nor by heat treatments afterwards. Also, corrosion resistance did not change or even increase during those treatments. Altogether, the study reveals a viable processing route for the optimization of Mg alloys to provide enhanced mechanical properties while leaving the corrosion properties unaffected, suggesting it for the use as biodegradable implant material. Full article
(This article belongs to the Special Issue Microstructure, Mechanical Properties, and Biomedical Applications of Magnesium-Based Alloys)
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14 pages, 5266 KiB  
Article
Characteristics of the Mg-Zn-Ca-Gd Alloy after Mechanical Alloying
by Sabina Lesz, Bartłomiej Hrapkowicz, Małgorzata Karolus and Klaudiusz Gołombek
Materials 2021, 14(1), 226; https://doi.org/10.3390/ma14010226 - 5 Jan 2021
Cited by 26 | Viewed by 3265
Abstract
Magnesium-based materials are interesting alternatives for medical implants, as they have promising mechanical and biological properties. Thanks to them, it is possible to create biodegradable materials for medical application, which would reduce both costs and time of treatment. Magnesium as the sole material, [...] Read more.
Magnesium-based materials are interesting alternatives for medical implants, as they have promising mechanical and biological properties. Thanks to them, it is possible to create biodegradable materials for medical application, which would reduce both costs and time of treatment. Magnesium as the sole material, however, it is not enough to support this function. It is important to determine proper alloying elements and methods. A viable method for creating such alloys is mechanical alloying, which can be used to design the structure and properties for proper roles. Mechanical alloying is highly influenced by the milling time of the alloy, as the time of the process affects many properties of the milled powders. X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy-dispersive spectroscopy (EDS) were carried out to study the powder morphology and chemical composition of Mg65Zn30Ca4Gd1 powders. Moreover, the powder size was assessed by granulometric method and the Vickers hardness test was used for microhardness testing. The samples were milled for 6 min, 13, 20, 30, 40, and 70 h. The hardness correlated with the particle size of the samples. After 30 h of milling time, the average value of hardness was equal to 168 HV and it was lower after 13 (333 HV), 20 (273 HV), 40 (329 HV), and 70 (314 HV) h. The powder particles average size increased after 13 (31 μm) h of milling time, up to 30 (45–49 μm) hours, and then sharply decreased after 40 (28 μm) and 70 (12 μm) h. Full article
(This article belongs to the Special Issue Microstructure, Mechanical Properties, and Biomedical Applications of Magnesium-Based Alloys)
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