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Crystals
Special Issues
Corrosion and Mechanical Performance of Magnesium Alloys
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Corrosion and Mechanical Performance of Magnesium Alloys

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

Deadline for manuscript submissions: 10 February 2025 | Viewed by 6584

Special Issue Editors

Dr. Björn Wiese

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Guest Editor
Functional Magnesium Materials, Institute of Metallic Biomaterials, Helmholtz-Zentrum Hereon GmbH, Geesthacht, Germany
Interests: alloy and process development for magnesium; resorbable and biodegradable magnesium alloys; magnesium alloys for lightweight applications; material characteristics; mechanical properties; corrosion/degradation; microstructure development; casting with solidification; heat treatment and phase transformations; extrusion as well as wire drawing in relation to recrystallisation, microstructure, and texture development; sintering
Special Issues, Collections and Topics in MDPI journals
Dr. Mert Celikin

E-Mail Website
Guest Editor
School of Mechanical and Materials Engineering, University College Dublin, Dublin, Ireland
Interests: solid-state phase transformations; fatigue/creep deformation; biomedical alloys (titanium, magnesium, nitinol); additive manufacturing; lightweight alloy design/processing; nanostructural characterization
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Norbert Hort

E-Mail Website
Guest Editor
Functional Magnesium Materials, Institute of Metallic Biomaterials, Helmholtz-Zentrum Hereon GmbH, Geesthacht, Germany & Leuphana University Lüneburg, Institute of Product Technology and Systems, Lüneburg, Germany
Interests: magnesium; solidification; in situ synchrotron radiation investigations; biomaterial; alloy development; properties

Special Issue Information

Dear Colleagues,

Magnesium and its alloys can be used in a wide range of applications, from lightweight structures to medical implants, but there are always concerns about resistance to corrosion. These concerns are legitimate when it comes to impure magnesium, the wrong alloys or the wrong service condition of the materials. It is therefore important to understand the interactions between the microstructure of magnesium alloys and how this affects the property profile in relation to the corrosion properties. This is particularly significant in the use of magnesium-based materials for medical applications where dissolution is considered desirable. There is also a significant difference here, usually speaking of the desired targeted degradation rates for the degradable implants rather than undesirable corrosion rates for structural applications. In the case of structural applications for lightweight construction, a greater number of components are coated in order to increase the service life for performance and sustainability reasons. Cleaning and coating are also important for applications in medical technology. Therefore, the aim of this Special Issue is to understand the complex relationships to enable the development of a more targeted and sustainable alloy processing, cleaning and coating. In addition to the classical empirical research and development methods, modelling and simulation approaches are also very welcome. These more theoretical approaches help develop a sustainable acceleration in material development and lead to a deeper understanding of the interactions. Therefore, the Guest Editors welcome all contributions that add knowledge to this thematic field.

We look forward to receiving your submissions.

Dr. Björn Wiese
Dr. Mert Celikin
Prof. Dr. Norbert Hort
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

  • mg alloys
  • magnesium alloys
  • mg-based materials
  • processing
  • microstructure
  • precipitation
  • mechanical properties
  • corrosion
  • coating
  • degradation
  • modelling
  • simulation

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Published Papers (3 papers)

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Research

14 pages, 2542 KiB  
Article
Hydroxyapatite Reinforced Magnesium Alloy Composites Using the Ultrasonic-Assisted Rheo-Squeeze Casting Technique: Microstructural and Mechanical Performance Evaluation for Bone Fixture Applications
by Arunkumar Thirugnanasambandam, Ashokkumar Mohankumar, Rajendra Prasad Reddy Botta, William Woei Fong Chong, Geethapriyan Thangamani and Manoj Gupta
Crystals 2024, 14(7), 667; https://doi.org/10.3390/cryst14070667 - 21 Jul 2024
Viewed by 818
Abstract
Magnesium-based biomaterials have recently been in the research spotlight in the field of biomedical engineering owing to their properties, such as density and biocompatibility that closely align with those of human bone. However, poor strength and rapid degradation impede their application as bone [...] Read more.
Magnesium-based biomaterials have recently been in the research spotlight in the field of biomedical engineering owing to their properties, such as density and biocompatibility that closely align with those of human bone. However, poor strength and rapid degradation impede their application as bone support fixtures. The present research aims to tailor the properties of Mg by using a novel ultrasonic-assisted rheo-squeeze casting approach. To satisfy the demand, pure Mg (Mg), MHA (Mg/5%HA), MZHA (Mg-1%Zn/5%HA/), and MSHA (Mg-1%Sn/5%HA) were fabricated, and various mechanical tests were conducted to assess the composite’s mechanical properties, including its microhardness, tensile strength, compressive strength, flexural strength, and impact strength. The microstructural and fractured morphology of the composites was examined by scanning electron microscopy (SEM), whereas their elemental composition was analyzed by field emission scanning electron microscopy (FESEM) equipped with elemental mapping. Comparing the MZHA, MHA, and pure Mg samples, the mechanical behavior of MSHA is significantly superior. This is due to composites containing Sn that possess finer-grained materials, which act as barriers to dislocation motion while increasing the strength of the materials. From the observed results, there is a significant improvement in the microhardness of MSHA of 64.5% when compared to that of pure Mg, and 42.7% compared to MHA. Furthermore, MSHA composites possess noticeable enhancements in tensile and compression performance of 80.8% and 58.3%, respectively, and 19% and 22.4% compared to MHA. Additionally, the impact and flexural performance of MSHA composites exhibit higher performance (41% and 42%) than pure Mg and 8% and 7% against the MHA composite. Full article
(This article belongs to the Special Issue Corrosion and Mechanical Performance of Magnesium Alloys)
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12 pages, 3960 KiB  
Article
Investigations of Electrochemical Characteristics of Mg-Al-Ca Alloys
by Ján Sovík, Branislav Hadzima, Nikolaus Peter Papenberg, Aurel Ramon Arnoldt and Stefan Gneiger
Crystals 2023, 13(12), 1684; https://doi.org/10.3390/cryst13121684 - 14 Dec 2023
Viewed by 3970
Abstract
Magnesium alloys possess a high strength-to-density ratio, thereby increasingly being utilized as lightweight structural materials in a range of industrial applications. Nevertheless, to compete with established materials like aluminum alloys, it is essential to understand the corrosion behavior of Mg and its alloys, [...] Read more.
Magnesium alloys possess a high strength-to-density ratio, thereby increasingly being utilized as lightweight structural materials in a range of industrial applications. Nevertheless, to compete with established materials like aluminum alloys, it is essential to understand the corrosion behavior of Mg and its alloys, as their high reactivity hampers industrial application. The addition of Ca to wrought Mg-Al alloys has gained attention for its ability to improve mechanical properties while also enhancing processing behavior. However, the wide range of alloy compositions within the class of Mg-Al-Ca alloys results in a variety of different corrosion properties. Consequently, this study contributes by investigating the corrosion behavior of two Mg-Al-Ca alloys, highlighting the influence of chemical composition and microstructure. Full article
(This article belongs to the Special Issue Corrosion and Mechanical Performance of Magnesium Alloys)
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16 pages, 6413 KiB  
Article
Temperature Effect on the Deformation Behavior in Nanocrystalline Magnesium under Compression: An Atomistic Study
by Cheng Zhang, Chun Xu, Yu Li, Binjun Wang and Yanhui Guo
Crystals 2023, 13(10), 1479; https://doi.org/10.3390/cryst13101479 - 11 Oct 2023
Cited by 1 | Viewed by 1196
Abstract
The classic molecular dynamics (MD) simulation approach has been used to investigate the microstructure change in polycrystalline magnesium (Mg) during compressive deformation at various temperatures. At low temperatures, there exists a competition between the sliding of Shockley partial dislocation (SPD) and perfect <a> [...] Read more.
The classic molecular dynamics (MD) simulation approach has been used to investigate the microstructure change in polycrystalline magnesium (Mg) during compressive deformation at various temperatures. At low temperatures, there exists a competition between the sliding of Shockley partial dislocation (SPD) and perfect <a> dislocation. Abundant dislocation behaviors such as dislocation bundle and double cross slipping are observed. With a temperature increase, the dislocation sliding is hindered by the newly formed grain boundaries (GBs). The grain reorientation should be the compensatory mechanism for plastic deformation at high temperatures. Furthermore, dynamic recrystallization (DRX) is found at the highest temperature investigated. For all the temperature cases studied, twinning is unsensitive against applied compressive stress. The results of this work may help to understand the temperature effect on the mechanism in polycrystalline Mg under compressive deformation. Full article
(This article belongs to the Special Issue Corrosion and Mechanical Performance of Magnesium Alloys)
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