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Light-Weight Metallic Materials...
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Light-Weight Metallic Materials

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: closed (30 June 2020) | Viewed by 9256

Special Issue Editors

Dr. Dina V. Dudina

E-Mail Website
Guest Editor
Lavrentyev Institute of Hydrodynamics, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave. 15, 630090 Novosibirsk, Russia
Interests: powder metallurgy; field-assisted sintering; metal matrix composites; powder processing; thermal spraying
Special Issues, Collections and Topics in MDPI journals
Dr. Konstantinos Georgarakis

E-Mail Website
Guest Editor
Low Energy and Novel Casting Sustainable Manufacturing Systems Centre, School of Aerospace, Transport and Manufacturing, Cranfield University, Bedford MK43 0AL, UK
Interests: metallic glasses; high entropy alloys; casting and rapid solidification; nanostructured and metastable materials; material synthesis and processing; powder metallurgy; composite materials; synchrotron and neutron radiation in materials characterization; thermo-mechanical treatment of metals; tribology; corrosion and oxidation; sustainable manufacturing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

It is our great honor to serve as Guest Editors of a Special Issue of Materials focusing on light-weight metallic materials. We are glad to inform you about an exciting opportunity to contribute a regular article, a short communication or a review to this Special Issue.

The weight of structural elements is an important factor for the automotive, aerospace, marine and medical applications. Recent years have witnessed extensive research aimed at developing materials capable of providing the desired strength to a part while keeping its weight as low as possible. At present, the search for new light-weight alloys and metal matrix composites is seemingly far from its end. We believe that, in order to make a step forward and determine new research directions in the area of light-weight metallic materials, the materials science community needs to discuss and critically evaluate the results obtained in recent years. This discussion can be successfully conducted within the framework of “Light-Weight Metallic Materials” Special Issue of Materials.

We welcome submissions:

1) Dealing with advanced processing, structural characterization and property evaluation of

  • aluminum, magnesium and titanium alloys,
  • aluminum, magnesium and titanium matrix composites,
  • materials based on Ti-Al intermetallics,
  • porous metals aimed for applications, for which their low weight is critical,
  • light-weight metallic glasses,
  • light-weight high entropy alloys (HEAs)

2) Introducing new compositions/phase combinations for light-weight metallic materials;

3) Succeeding in the search for new reinforcements for light metals;

4) Introducing new microstructure control tools and new microstructure design strategies for light-weight metallic materials;

5) Analyzing the strengthening mechanisms operating in alloys and metal matrix composites;

6) Presenting detailed studies of the interfaces of light-weight metal matrix composites;

7) Presenting different approaches to porosity generation in metals and alloys.

We are looking forward to receiving your high-quality contributions!

Sincerely,

Dr. Dina Dudina
Dr. Konstantinos Georgarakis
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

  • Light-weight materials
  • Aluminum alloys
  • Magnesium alloys
  • Titanium alloys
  • Metal matrix composites
  • Ti-Al intermetallics
  • Al matrix composites
  • Mg matrix composites
  • Ti matrix composites
  • Reinforcement
  • Strengthening mechanism
  • Grain size
  • Microstructure
  • Density
  • Porous metallic materials
  • Light-weight metallic glass
  • Light-weight high entropy alloys
  • Mechanical properties

Published Papers (3 papers)

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Research

15 pages, 5745 KiB  
Article
Comparison of High-Temperature Compression and Compression-Compression Fatigue Behavior of Magnesium Alloys DieMag422 and AE42
by Mirko Teschke, Alexander Koch and Frank Walther
Materials 2020, 13(3), 497; https://0-doi-org.brum.beds.ac.uk/10.3390/ma13030497 - 21 Jan 2020
Cited by 7 | Viewed by 2915
Abstract
Due to their high strength-to-weight-ratio, magnesium alloys are very attractive for use in automotive engineering. For application at elevated temperatures, the alloys must be creep-resistant. Therefore, the influence of the operating temperature on the material properties under quasistatic and cyclic load has to [...] Read more.
Due to their high strength-to-weight-ratio, magnesium alloys are very attractive for use in automotive engineering. For application at elevated temperatures, the alloys must be creep-resistant. Therefore, the influence of the operating temperature on the material properties under quasistatic and cyclic load has to be understood. A previous study investigated tensile-tensile fatigue behavior of the magnesium alloys DieMag422 and AE42 at room temperature (RT). The aim of this study was the comparison of both alloys regarding compression, tensile, and compression-compression fatigue behavior. The quasistatic behavior was determined by means of tensile and compression tests, and the tensile-compression asymmetry was analyzed. In temperature increase fatigue tests (TIFT) and constant amplitude tests (CAT), the temperature influence on the cyclic creeping (ratcheting) behavior was investigated, and mechanisms-relevant test temperatures were determined. Furthermore, characteristic fracture mechanisms were evaluated with investigations of the microstructure and the fracture surfaces. The initial material was analyzed in computed tomographic scans and energy dispersive X-ray (EDX) analyses. Full article
(This article belongs to the Special Issue Light-Weight Metallic Materials )
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13 pages, 7238 KiB  
Article
Microstructure Evolution and Mechanical Properties of AZ80 Mg Alloy during Annular Channel Angular Extrusion Process and Heat Treatment
by Xi Zhao, Shuchang Li, Fafa Yan, Zhimin Zhang and Yaojin Wu
Materials 2019, 12(24), 4223; https://0-doi-org.brum.beds.ac.uk/10.3390/ma12244223 - 16 Dec 2019
Cited by 16 | Viewed by 2357
Abstract
Microstructure evolution and mechanical properties of AZ80 Mg alloy during annular channel angular extrusion (350 °C) and heat treatment with varying parameters were investigated, respectively. The results showed that dynamic recrystallization of Mg grains was developed and the dendritic eutectic β-Mg17Al [...] Read more.
Microstructure evolution and mechanical properties of AZ80 Mg alloy during annular channel angular extrusion (350 °C) and heat treatment with varying parameters were investigated, respectively. The results showed that dynamic recrystallization of Mg grains was developed and the dendritic eutectic β-Mg17Al12 phases formed during the solidification were broken into small β-phase particles after hot extrusion. Moreover, a weak texture with two dominant peaks formed owing to the significant grain refinement and the enhanced activation of pyramidal <c + a> slip at relative high temperature. The tension tests showed that both the yield strength and ultimate tensile strength of the extruded alloy were dramatically improved owing to the joint strengthening effect of fine grain and β-phase particles as compared with the homogenized sample. The solution treatment achieved the good plasticity of the alloy resulting from the dissolution of β-phases and the development of more equiaxed grains, while the direct-aging process led to poor alloy elongation as a result of residual eutectic β-phases. After solution and aging treatment, simultaneous bonding strength and plasticity of the alloy were achieved, as a consequence of dissolution of coarse eutectic β-phases and heterogeneous precipitation of a large quantity of newly formed β-phases with both the morphologies of continuous and discontinuous precipitates. Full article
(This article belongs to the Special Issue Light-Weight Metallic Materials )
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20 pages, 6117 KiB  
Article
Ceramic-Reinforced γ-TiAl-Based Composites: Synthesis, Structure, and Properties
by Daria V. Lazurenko, Andreas Stark, Maksim A. Esikov, Jonathan Paul, Ivan A. Bataev, Adelya A. Kashimbetova, Vyacheslav I. Mali, Uwe Lorenz and Florian Pyczak
Materials 2019, 12(4), 629; https://0-doi-org.brum.beds.ac.uk/10.3390/ma12040629 - 20 Feb 2019
Cited by 11 | Viewed by 3396
Abstract
In this study, new multilayer TiAl-based composites were developed and characterized. The materials were produced by spark plasma sintering (SPS) of elemental Ti and Al foils and ceramic particles (TiB2 and TiC) at 1250 °C. The matrix of the composites consisted of [...] Read more.
In this study, new multilayer TiAl-based composites were developed and characterized. The materials were produced by spark plasma sintering (SPS) of elemental Ti and Al foils and ceramic particles (TiB2 and TiC) at 1250 °C. The matrix of the composites consisted of α2-TiAl and γ-TiAl lamellas and reinforcing ceramic layers. Formation of the α2 + γ structure, which occurred via a number of solid–liquid and solid–solid reactions and intermediate phases, was characterized by in situ synchrotron X-ray diffraction analysis. The combination of X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and energy dispersive X-ray (EDX) analysis revealed that an interaction of TiC with Ti and Al led to the formation of a Ti2AlC Mn+1AXn (MAX) phase. No chemical reactions between TiB2 and the matrix elements were observed. The microhardness, compressive strength, and creep behavior of the composites were measured to estimate their mechanical properties. The orientation of the layers with respect to the direction of the load affected the compressive strength and creep behavior of TiC-reinforced composites. The compressive strength of samples loaded in the perpendicular direction to layers was higher; however, the creep resistance was better for composites loaded in the longitudinal direction. The microhardness of the composites correlated with the microhardness of reinforcing components. Full article
(This article belongs to the Special Issue Light-Weight Metallic Materials )
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