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Advanced Magnesium Alloys: Design, Processing, Microstructure, Properties and Applications

A Special Issue of Materials (ISSN 1996-1944) belonging to the section "Metals and Alloys".

Deadline for manuscript submissions: 20 January 2027 | Viewed by 727

Editors

Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, School of Intelligent Manufacturing, Jiangnan University, Wuxi 214122, China
Interests: research in magnesium and high-entropy alloys; skill in thermodyanmics; multi-scale simulations and characterizations
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Guest Editor
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
Interests: additive manufacturing; machine learning; superalloys; microstructural control; severe plastic deformation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Magnesium alloys have attracted increasing attention as promising lightweight structural materials owing to their low density, high specific strength, good machinability, and potential for multifunctional applications. They are of particular interest in transportation, aerospace, electronics, biomedical devices, energy systems, and emerging extreme-environment applications. However, the broader engineering application of magnesium alloys is still limited by several intrinsic and processing-related challenges, including limited room-temperature formability, insufficient strength–ductility synergy, poor corrosion resistance, thermal instability, texture-induced anisotropy, and difficulties in large-scale manufacturing.

Recent advances in alloy design, thermomechanical processing, additive manufacturing, surface modification, computational materials science, and advanced characterization have provided new opportunities to overcome these limitations. In particular, the development of rare-earth and low-rare-earth magnesium alloys, precipitation-strengthened systems, high-ductility wrought alloys, corrosion-resistant alloys, biodegradable magnesium alloys, and magnesium matrix composites has significantly expanded the potential application space of this material family. Meanwhile, multiscale modeling, CALPHAD, first-principles calculations, machine learning, in situ characterization, and high-throughput experiments are accelerating the understanding of composition–processing–microstructure–property relationships in magnesium alloys.

This Special Issue aims to provide a broad platform for the latest advances in magnesium alloys, covering fundamental mechanisms, alloy development, processing technologies, performance optimization, and practical applications. Both original research articles and comprehensive review papers are welcome.

[Topic 1] Alloy design and composition optimization of magnesium alloys.

[Topic 2] Thermodynamics, kinetics and computational design.

[Topic 3] Microstructure control and strengthening mechanisms.

[Topic 4] Plastic deformation and mechanical behavior.

[Topic 5] Processing and manufacturing technologies.

[Topic 6] Corrosion, surface modification and environmental degradation.

[Topic 7] Biodegradable and biomedical magnesium alloys.

[Topic 8] Magnesium matrix composites and multifunctional materials.

Dr. Yiwen Chen
Dr. Yunwei Gui
Guest Editors

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Keywords

  • magnesium alloys
  • lightweight materials
  • alloy design
  • microstructure control
  • mechanical properties
  • corrosion re-sistance
  • thermomechanical processing
  • additive manufacturing
  • biodegradable metals
  • CALPHAD
  • precipitation strengthening
  • texture
  • LPSO phase
  • advanced characterization
  • materials genome engineering

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Published Papers (1 paper)

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Research

21 pages, 12993 KB  
Article
Unraveling the Distinct Roles of Al and Ca in Microstructure Evolution and Tensile Response of Extruded Mg–Al–Ca Alloys
by Chen Chen, Junbo Wang, Yong Wang, Changyu Hu, Shengxiong Tang, Ranfeng Qiu and Yiwen Chen
Materials 2026, 19(12), 2638; https://doi.org/10.3390/ma19122638 - 18 Jun 2026
Cited by 1 | Viewed by 516
Abstract
Mg-Al-Ca alloys are attractive low-cost wrought Mg alloys. However, the distinct roles of Al and Ca in regulating deformation-processed microstructures and mechanical properties remain unclear. In this work, Mg–6Al–0.5Ca, Mg–9Al–0.5Ca, and Mg–9Al–1.3Ca (wt. %) alloys were extruded at 250 °C and 300 °C [...] Read more.
Mg-Al-Ca alloys are attractive low-cost wrought Mg alloys. However, the distinct roles of Al and Ca in regulating deformation-processed microstructures and mechanical properties remain unclear. In this work, Mg–6Al–0.5Ca, Mg–9Al–0.5Ca, and Mg–9Al–1.3Ca (wt. %) alloys were extruded at 250 °C and 300 °C to clarify the composition-dependent microstructure evolution and strengthening mechanisms. Increasing the Al content from 6 to 9 wt. % markedly promoted the formation of fine Mg17Al12 (f-Mg17Al12) and coarse Mg17Al12 particles, whereas increasing the Ca content from 0.5 to 1.3 wt. % promoted the formation of coarse Al2Ca particles while reducing the density of f-Mg17Al12. Quantitative analysis revealed that f-Mg17Al12 particles refined dynamically recrystallized grains by promoting recrystallization nucleation and pinning grain boundaries while also contributing to Orowan strengthening. The Mg–9Al–0.5Ca alloy exhibited the best strength–ductility balance, with a yield strength of 338 ± 4 MPa, ultimate tensile strength of 396 ± 5 MPa, and elongation of 8.7 ± 1.6% after extrusion at 250 °C. Strengthening calculations indicated that grain-boundary strengthening was the dominant strengthening contribution, while the strength advantage of Mg–9Al–0.5Ca originated from the dual role of f-Mg17Al12 in grain refinement and dislocation obstruction. These findings provide a practical strategy for designing high-strength non-rare-earth Mg–Al–Ca extrusion alloys. Full article
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