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Alloy Prepared by Additive Manufacturing Technology: Microstructure and Mechanical Property

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

Deadline for manuscript submissions: 20 July 2025 | Viewed by 1347

Special Issue Editor


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Guest Editor
Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Department of Plastic Deformation of Metals, 25 Reymonta St., 30-059 Krakow, Poland
Interests: advanced materials; material characterization; plasticity; mechanical properties; mechanical engineering; manufacturing engineering; materials; deformation bonding (including explosive bonding); severe plastic deformation; non-homogeneous flow of metals; grain boundary; materials processing; crystallographic aspects of deformation and recrystallization; microstructure; heat treatment; texture analysis; X-ray diffraction; scanning electron microscopy EBSD 2D/3D; transmission electron microscopy

Special Issue Information

Dear Colleagues,

Additive manufacturing (AM) technologies are modern, advanced manufacturing processes. Additive manufacturing refers to the general manufacturing process—the production of objects by adding material—under which various production processes such as rapid prototyping, rapid tooling, or mass customization can be subsumed.

The successful use of additive manufacturing technologies allows for significant flexibility in the product design process, allowing for a solution with properties that are difficult to achieve using conventional manufacturing techniques. Except for rapid manufacturing and mass customization, an additional advantage is the flexibility of the production itself, especially in the case of customized or small batch production.

Currently, the performance properties of additively manufactured parts are affected by a lot of different parameters and are still the main topic of research papers. The main scope of this Special Issue is to discuss the potential applications of alloys fabricated using additive manufacturing technology. It emphasizes the advantages of customization, design freedom, and reduced material waste offered by this technology, making it particularly beneficial for industries such as aerospace, automotive, mechanical engineering, biomedical engineering, civil engineering, material engineering, manufacturing, nanotechnology, tribology, etc.

Dr. Magdalena M. Miszczyk
Guest Editor

Manuscript Submission Information

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Keywords

  • additive manufacturing
  • metallic materials
  • microstructure/texture relationship
  • AM of new materials
  • manufacturing engineering
  • material engineering
  • mechanical properties of new materials

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Published Papers (1 paper)

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Research

15 pages, 8067 KiB  
Article
Effect of Precipitation-Free Zone on Fatigue Properties in Al-7.02Mg-1.98Zn Alloys: Crystal Plasticity Finite Element Analysis
by Xin Chen, Xiaoyu Zheng, Meichen Pan, Yuling Liu, Yi Kong, Alexander Hartmaier, Liya Li and Yong Du
Materials 2024, 17(22), 5623; https://doi.org/10.3390/ma17225623 - 18 Nov 2024
Viewed by 936
Abstract
Age-strengthened aluminum alloys, as important lightweight structural materials, have significantly lower fatigue properties compared to non-age-strengthened aluminum alloys. In this study, the polycrystalline models containing precipitation-free zones (PFZ) were constructed by secondary development of the traditional polycrystalline model by modifying the mesh file. [...] Read more.
Age-strengthened aluminum alloys, as important lightweight structural materials, have significantly lower fatigue properties compared to non-age-strengthened aluminum alloys. In this study, the polycrystalline models containing precipitation-free zones (PFZ) were constructed by secondary development of the traditional polycrystalline model by modifying the mesh file. Polycrystalline finite element simulations of peak age-treated Al-7.02Mg-1.98Zn alloys were carried out with this model. The results demonstrate that the PFZ’s presence markedly reduces the alloy’s yield strength and a substantial stress concentration occurs adjacent to the PFZ, generating significant compressive stresses at the PFZ. Under cyclic loading, the maximum strain energy dissipation in the model containing the PFZ far exceeds that observed in the conventional polycrystalline model, and the strain energy dissipation observed in the PFZ is significantly higher than that at other locations. This indicates that the PFZ is the main region for fatigue crack initiation. In addition, the introduction of a rotation factor to simulate the inhomogeneous rotation within the grain reveals that the additional stress concentration in the PFZ introduced by the aluminum alloy-forming process further increases the fatigue crack initiation driving force. Full article
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