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Alloy Strengthening Mechanisms, Microstructural Control, and Performance Optimization

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Metals and Alloys".

Deadline for manuscript submissions: 20 March 2025 | Viewed by 652

Special Issue Editors


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Guest Editor
College of Materials Science and Engineering, Chongqing University, Chongqing, China
Interests: flash sintering; materials characterization; alloy strengthening; first-principles calculation

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Guest Editor
School of Mechanical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
Interests: metal matrix composites; field-assisted material fabrication; physicochemistry of material preparation and metallurgical processes

Special Issue Information

Dear Colleagues,

Metals and alloys are pivotal to technological advancements in various engineering sectors. The enhancement of material properties such as strength, ductility, and corrosion resistance hinges critically on the manipulation of alloy composition and meticulous control of microstructures. This Special Issue seeks to explore the underlying mechanisms of alloy strengthening and the strategic control of microstructures and properties through innovative processing techniques. We aim to compile cutting-edge research and comprehensive reviews that address the latest developments in the fabrication, characterization, and application of strengthened alloys and metal matrix composites. Contributions may cover topics such as sintering, phase transformation, dislocation theory, nanostructuring, and the role of alloying elements and heat treatment in microstructural evolution and property enhancement.

We warmly invite submissions that extend the boundaries of traditional material fabrication and processing techniques and provide novel insights into alloy strengthening mechanisms, microstructural control, and performance optimization. We eagerly anticipate receiving submissions that not only deepen our understanding through experimental studies but also include theoretical research effectively employing computational simulations to provide valuable guidance for bridging experimental research and industrial applications.

Dr. Hongling Zhou
Prof. Dr. Keqin Feng
Guest Editors

Manuscript Submission Information

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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

  • alloys
  • metal matrix composites
  • sintering
  • heat treatment
  • microstructure– property evaluation
  • materials characterization
  • mechanical properties
  • numerical simulations
  • strengthening mechanisms
  • microstructural control

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Published Papers (1 paper)

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Research

16 pages, 6004 KiB  
Article
Natural and Artificial Aging Effects on the Deformation Behaviors of Al–Mg–Zn Alloy Sheets
by Kwangmin Choi, Sangjun Lee and Donghyun Bae
Materials 2024, 17(18), 4478; https://doi.org/10.3390/ma17184478 - 12 Sep 2024
Viewed by 306
Abstract
This study investigated the effects of aging profiles on the precipitate formation and the corresponding strengthening and deformation behaviors of Al–Mg–Zn alloys. The alloys subjected to natural aging (NA) demonstrated significantly enhanced ductility at equivalent stress levels compared to those subjected to artificial [...] Read more.
This study investigated the effects of aging profiles on the precipitate formation and the corresponding strengthening and deformation behaviors of Al–Mg–Zn alloys. The alloys subjected to natural aging (NA) demonstrated significantly enhanced ductility at equivalent stress levels compared to those subjected to artificial aging (AA). In AA-treated alloys, η′ and η-phases with incoherent interfaces were formed, while GP zones and solute clusters were dominantly exhibited in the NA-treated alloy with a coherent interface with the matrix. Due to the change in interface bonding, the dislocation movement and pinning behavior after deformation are varied depending on the aging conditions of Al–Mg–Zn alloy sheet. Thus, the elongation to fracture of the NA alloy sheet was improved compared to that of the AA alloy sheet because of the enhanced work-hardening capacity and the thin precipitate-free zone (PFZ). Deformation textures and dislocation densities varied between NA and AA treatments, as revealed by electron backscatter diffraction (EBSD) and kernel average misorientation (KAM) analysis. The interactions between the precipitates, dislocations, and the PFZ in the AA- and NA-treated alloys were analyzed via transmission electron microscopy (TEM). The insights gained from this research provide a valuable foundation for industrial applications, particularly in sectors demanding lightweight, high-strength materials, where optimizing the aging process can lead to significant performance improvement and cost savings. Full article
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