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Metals
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Microstructure Evolution and Mechanical Properties of Magnesium Alloys—2nd Edition
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Microstructure Evolution and Mechanical Properties of Magnesium Alloys—2nd Edition

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: 31 December 2024 | Viewed by 3155

Special Issue Editor

Dr. Bo Song

E-Mail Website
Guest Editor
School of Materials and Energy, Southwest University, Chongqing 400715, China
Interests: magnesium alloys; texture; deformation mechanism; mechanical properties; twinning behavior; gradient microstructure; precipitation behavior
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Magnesium alloys have attractive properties such as high specific strength, high specific stiffness, and recyclability. Because of these characteristics, magnesium alloys are increasingly used in automotive, aviation, aerospace, electronics, and other consumer products. This also places a great demand on the mechanical properties of magnesium alloys.

The mechanical properties of magnesium alloys are closely related to their microstructure, including grain size, texture, precipitates, alloying elements, etc. In order to obtain the expected performance, a large number of scholars have devoted themselves to the development of new alloys and new processing technologies (including casting technology, plastic processing technology, powder metallurgy, 3D printing, etc.) to tailor these microstructures.

The aim of this Special Issue is to provide an open platform to share the latest research results in the development of high-performance magnesium alloys. This Special Issue covers original research and review articles on recent advances in alloy design, microstructure modification, processing technology, deformation mechanism, and computer simulation.

Dr. Bo Song
Guest Editor

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. Metals 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 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
  • magnesium matrix composites
  • development of new alloys
  • new processing technologies
  • microstructure
  • mechanical properties

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Related Special Issue

Published Papers (3 papers)

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Research

22 pages, 1877 KiB  
Article
Deformation Behaviors and Microstructure Evolution of Mg-Zn-Y-Zr Alloys During Hot Compression Process
by Hong Jiang, Bin Yang, Yujuan Wu, Biyou Peng and Meifeng He
Metals 2024, 14(12), 1332; https://doi.org/10.3390/met14121332 - 24 Nov 2024
Viewed by 377
Abstract
This study investigated the thermal compression deformability of the low-alloyed Mg-Zn-Y-Zr magnesium alloy temperatures ranging from 300 to 450 °C, and strain rates between 0.01 s−1 and 1 s−1. A hot processing map was established using a novel constitutive model. [...] Read more.
This study investigated the thermal compression deformability of the low-alloyed Mg-Zn-Y-Zr magnesium alloy temperatures ranging from 300 to 450 °C, and strain rates between 0.01 s−1 and 1 s−1. A hot processing map was established using a novel constitutive model. The results demonstrate that the flow stress of the low-alloyed Mg-Zn-Y-Zr alloy is markedly affected by the deformation temperature and strain rate, predominantly manifesting characteristics of work hardening (WH) and dynamic recrystallization-induced softening. The high-temperature rheological behavior of the alloy is accurately portrayed with a constitutive model, with an activation energy measured at 287 kJ/mol. The mechanism of dynamic recrystallization (DRX) gradually shifts from twinning dynamic recrystallization (TDRX) to continuous dynamic recrystallization (CDRX) and discontinuous dynamic recrystallization (DDRX). At 400 °C, as the strain rate decreases, the I-phase in the microstructure gradually transforms into the W-phase, weakening the inhibitory effect on DRX grain growth. Full article
(This article belongs to the Special Issue Microstructure Evolution and Mechanical Properties of Magnesium Alloys—2nd Edition)
12 pages, 5427 KiB  
Article
Obtaining Heterogeneous Microstructure and Enhanced Mechanical Properties in ECAP-Processed AZ61 Alloys via Single-Pass Rolling with Increased Rolling Reduction
by Qiong Xu, Yuhua Li, Aibin Ma, Jinghua Jiang and Donghui Yang
Metals 2024, 14(7), 765; https://doi.org/10.3390/met14070765 - 27 Jun 2024
Cited by 1 | Viewed by 1055
Abstract
Material design and preparation based on constructing heterogeneous microstructures can break the conventional performance limitations of fine-grained magnesium alloys. In this study, AZ61 alloys processed via multi-pass equal channel angular pressing (ECAP) were subjected to single-pass rolling (SPR) with increased rolling reductions. The [...] Read more.
Material design and preparation based on constructing heterogeneous microstructures can break the conventional performance limitations of fine-grained magnesium alloys. In this study, AZ61 alloys processed via multi-pass equal channel angular pressing (ECAP) were subjected to single-pass rolling (SPR) with increased rolling reductions. The effect of rolling reduction on the formation of heterogeneous microstructure and the mechanical properties of the alloy was investigated. Microstructural examinations revealed that a heterogeneous microstructure was formed in the alloy at varied rolling reductions, but the desired heterostructure with higher fine grain contents could only be achieved at increased rolling reduction. This was mainly due to the fact that the alloy underwent partial dynamic recrystallization (PDRX) under SPR, and PDRX more easily occurred with higher rolling reduction. The tensile test results showed that with increased rolling reduction, the strength of the alloy first increased and then decreased slightly, with the ductility steadily increasing. Improved mechanical properties were achieved in the alloy rolled at increased rolling reductions owing to the heterogeneous microstructure with a greater content of fine grains. Full article
(This article belongs to the Special Issue Microstructure Evolution and Mechanical Properties of Magnesium Alloys—2nd Edition)
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17 pages, 12828 KiB  
Article
Microstructure and Texture Evolution of Hot-Rolled Mg-3Gd Alloy during Recrystallization
by Fang Han, Hanxi Wang, Xuan Luo, Ziyong Hou, Guilin Wu and Xiaoxu Huang
Metals 2023, 13(7), 1216; https://doi.org/10.3390/met13071216 - 30 Jun 2023
Viewed by 1385
Abstract
An Mg-3Gd (wt.%) sample with gradient rolling strains (ε = 0–0.55) was prepared using a wedge-shaped plate after one-pass hot rolling, allowing a high-throughput characterization of microstructure and texture over a wide strain range within one hot-rolled plate. The microstructure and texture evolutions [...] Read more.
An Mg-3Gd (wt.%) sample with gradient rolling strains (ε = 0–0.55) was prepared using a wedge-shaped plate after one-pass hot rolling, allowing a high-throughput characterization of microstructure and texture over a wide strain range within one hot-rolled plate. The microstructure and texture evolutions were characterized as a function of rolling strain for the as-hot-rolled sample and as a function of annealing temperature for the subsequently annealed samples. The deformed microstructure showed a gradual change with increasing rolling strain, i.e., from a deformation twins-dominant structure in the low strain range of 0–0.20, to a shear bands-dominant structure in the higher strain range of 0.20–0.55. The recrystallization behavior during annealing showed a clear correlation between the recrystallization nucleation site and the deformed microstructure. However, a weak recrystallization texture with non-basal texture components was formed over almost the entire strain range. This work demonstrates a high-throughput experimental strategy using a wedge-shaped sample to investigate the effect of various processing parameters, such as strain and annealing temperature, on the evolution of microstructure, texture, and mechanical properties, which could accelerate the optimization of processing parameters and microstructural design. Full article
(This article belongs to the Special Issue Microstructure Evolution and Mechanical Properties of Magnesium Alloys—2nd Edition)
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