materials-logo

Journal Browser

Journal Browser

Microstructure and the Mechanical and Physical Properties of Light Metal Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Materials Characterization".

Deadline for manuscript submissions: closed (10 March 2023) | Viewed by 3229

Special Issue Editors


E-Mail Website
Guest Editor
Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Praha 2, Czech Republic
Interests: light alloys; mechanical properties; internal friction; thermally activated processes; unstable plastic deformation; dynamic strain ageing; solid solution hardening
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Charles University, Faculty of Mathematics and Physics, V Holešovičkách 2, 180 00 Praha 8, Czech Republic
Interests: magnesium alloys and composites; mechanical and physical properties of light metals; thermal expansion

Special Issue Information

Dear Colleagues,

In regard to lightweight metallic materials, we have in mind aluminum, magnesium, and titanium alloys. Beryllium and its alloys may also be considered as lightweight materials, but in this case, due to several restrictions connected with their costs, inherent brittleness, and toxicity, their possible applications are limited. Lightweight alloys are attracting increasing attention due to their potential applications in automotive, aerospace, communication, and computer industries where lightweight materials are desirable. In the last several decades, these materials have been the focus of researchers and engineers because of their low density and high specific strength. Applications of such materials save energy and reduce CO2 emissions. Currently, great attention is devoted to the thermomechanical treatment of lightweight materials. It should be mentioned that alloys subjected to various types of severe plastic deformation exhibit improved mechanical properties. On the other hand, anisotropy of such materials may increase. It is valid in particular in hexagonal magnesium and titanium alloys and partially in aluminum alloys and cubic body centered titanium alloys. The main topics of this Special Issue are studies revealing the mechanical and physical properties of light alloys subjected to severe plastic deformation. Papers dealing with new alloys, alloys with some special properties (high ductility, suitable elastic properties, and creep resistance or shape memory are welcomed.

Magnesium and titanium alloys are also promising materials for biomedical applications. In this case, the thermomechanical treatment may have the deciding importance for resulting materials properties and manufacture of specific metallic implants.

This Special Issue provides an opportunity to exchange new ideas and results concerning light metals and their possible applications.

Prof. Dr. Zuzanka Trojanová
Prof. Dr. Zdeněk Drozd
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
  • Aluminum alloys
  • Titanium alloys
  • Microstructure
  • Elastic properties
  • Mechanical properties
  • Severe plastic deformation
  • Thermal expansion
  • Thermal conductivity
  • Electrical resistivity
  • Corrosion properties

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

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

Published Papers (3 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

15 pages, 7873 KiB  
Article
Effect of Temperature on the Complex Modulus of Mg-Based Unidirectionally Aligned Carbon Fiber Composites
by Stanislav Kúdela, Jr., Juraj Koráb and Pavol Štefánik
Materials 2022, 15(21), 7812; https://doi.org/10.3390/ma15217812 - 5 Nov 2022
Cited by 2 | Viewed by 1236
Abstract
Composite materials based on magnesium–lithium (MgLi) and magnesium–yttrium (MgY) matrices reinforced with unidirectional carbon fibers were prepared using the gas pressure infiltration method. Two types of carbon fibers were used, high-strength PAN-based T300 fibers and high-modulus pitch-based Granoc fibers. The PAN-based carbon fibers [...] Read more.
Composite materials based on magnesium–lithium (MgLi) and magnesium–yttrium (MgY) matrices reinforced with unidirectional carbon fibers were prepared using the gas pressure infiltration method. Two types of carbon fibers were used, high-strength PAN-based T300 fibers and high-modulus pitch-based Granoc fibers. The PAN-based carbon fibers have an internal turbostratic structure composed of crystallites. The pitch-based carbon fibers have a longitudinally aligned graphite crystal structure. The internal carbon fiber structure is crucial in the context of the interfacial reaction with the alloying element. There are various mechanisms of bonding to carbon fibers in the case of magnesium–lithium and magnesium–yttrium alloys. This paper presents the use of the DMA method for the characterization of the role of alloying elements in the quality of interfacial bonding and the influence on the complex modulus at increasingly elevated temperatures (50–250 °C). The complex modulus values of the composites with T300 fibers were in the range of 118–136 GPa. The complex modulus values of the composites with Granoc fibers were in the range of 198–236 GPa. The damping capacity of magnesium-based unidirectionally aligned carbon fiber composites is related to the quality of the interfacial bonding. Full article
Show Figures

Figure 1

17 pages, 23150 KiB  
Article
Fatigue in an AZ31 Alloy Subjected to Rotary Swaging
by Zuzanka Trojanová, Zdeněk Drozd, Kristýna Halmešová, Ján Džugan, Tereza Hofrichterová, Peter Palček, Peter Minárik, Tomáš Škraban and František Nový
Materials 2022, 15(21), 7541; https://doi.org/10.3390/ma15217541 - 27 Oct 2022
Cited by 4 | Viewed by 1348
Abstract
The magnesium AZ31 alloy was swaged with rotary pressure with the aim of redefining the microstructure and improving mechanical and fatigue properties. The rotary swaging process and subsequent ageing improved the yield stress in tension and compression. In the present study, the investigation [...] Read more.
The magnesium AZ31 alloy was swaged with rotary pressure with the aim of redefining the microstructure and improving mechanical and fatigue properties. The rotary swaging process and subsequent ageing improved the yield stress in tension and compression. In the present study, the investigation was focused on fatigue behaviour. The samples were cycled in a symmetric regime with a frequency of 35 Hz. A dependence of the stress amplitude on the number of cycles up to the fracture was estimated. The microstructure of the samples and fracture surfaces was analysed with a scanning electron microscope. The fatigue process was influenced by the pronounced texture formed in the swaging process. The fatigue properties of the swaged samples improved substantially—the endurance limit based on 107 cycles was approximately 120 MPa—compared to those of the cast alloy. The analysis of the fracture surfaces showed a transcrystalline fatigue fracture. Full article
Show Figures

Figure 1

13 pages, 5978 KiB  
Article
Heat Treatment of Cast and Cold Rolled Al–Yb and Al–Mn–Yb–Zr Alloys
by Veronika Kodetová, Martin Vlach, Lucia Bajtošová, Michal Leibner, Hana Kudrnová, Jaroslav Málek, Vladimír Mára, Miroslav Cieslar and Sebastien Zikmund
Materials 2021, 14(23), 7122; https://doi.org/10.3390/ma14237122 - 23 Nov 2021
Cited by 2 | Viewed by 1466
Abstract
The microstructure, electrical properties and microhardness of as-cast and cold rolled AlYb and AlMnYbZr alloys were investigated. The addition of Mn, Yb and Zr has a positive influence on grain size. A deformed structure of the grains with no changes of their size [...] Read more.
The microstructure, electrical properties and microhardness of as-cast and cold rolled AlYb and AlMnYbZr alloys were investigated. The addition of Mn, Yb and Zr has a positive influence on grain size. A deformed structure of the grains with no changes of their size was observed after cold rolling. The Al3Yb particles coherent with the matrix were observed in the AlYb alloys. The size of the particles was about 20 nm in the initial state; after isochronal treatment up to 540 °C the particles coarsen, and their number density was lower. The deformation has a massive effect on the microhardness behavior until treatment at 390 °C, after which the difference in microhardness changes between as-cast and cold rolled alloys disappeared. Relative resistivity changes show a large decrease in the temperature interval of 330–540 °C which is probably caused by a combination of recovery of dislocations and precipitation of the Al3(Yb,Zr) particles. Precipitation hardening was observed between 100 and 450 °C in the AlYb alloy after ageing at 625 °C/24 h and between 330 and 570 °C in the AlMnYbZr alloy after ageing at 625 °C/24 h. Full article
Show Figures

Figure 1

Back to TopTop