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Fabrication of Advanced Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: 20 May 2025 | Viewed by 4512

Special Issue Editor


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Guest Editor
Department of Mechanical Engineering, Tsinghua University, Beijing, China
Interests: additive manufacturing; high-temperature alloys; intermetallic compounds; material characterization; microstructure; mechanical properties

Special Issue Information

Dear Colleagues,

The aerospace and biomedicine industries have rapidly developed, with progress in material advancements, and fabrication technologies have been shown to play a pivotal role. Additive manufacturing and welding processes for metallic materials have emerged as critical technologies, advancing high-tech industries. On the other hand, advanced fabrication technologies such as 3D bioprinting allow for the processing of biomaterials into tissue-mimetic functional constructs. Focusing on the fabrication of materials requires clear understanding and manipulation of material properties.

In order to enable researchers to understand microstructural evolution and performance data, one essential process in these fabrication techniques is material characterization. This knowledge is crucial for optimizing fabrication processes to achieve the desired properties.

Key challenges include understanding how fabrication techniques impact the microstructure and mechanical properties of materials, such as the grain size and defect formation for metallic materials which affect strength and toughness, or the microporous dimension and stiffness of hydrogel biomaterials. Optimizing the processing parameters would improve material performance. This will enhance material reliability in critical applications, benefiting industries like aerospace and biomedicine.

This Special Issue aims to study the fabrication technology of advanced materials. Topics of interest include, but are not limited to, advanced manufacturing technologies, 3D printing, welding, and other fabrication techniques.

Dr. Yang Li
Guest Editor

Manuscript Submission Information

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Keywords

  • advanced manufacturing technologies
  • additive manufacturing
  • welding
  • other fabrication techniques
  • material characterization
  • microstructure
  • mechanical properties

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Published Papers (4 papers)

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Research

18 pages, 5282 KiB  
Article
Mechanical and Catalytic Degradation Properties of Porous FeMnCoCr High-Entropy Alloy Structures Fabricated by Selective Laser Melting Additive Manufacturing
by Lyusha Cheng, Cheng Deng, Yushan Huang, Kai Li and Changjun Han
Materials 2025, 18(1), 185; https://doi.org/10.3390/ma18010185 - 4 Jan 2025
Viewed by 815
Abstract
This work investigated the mechanical and catalytic degradation properties of FeMnCoCr-based high-entropy alloys (HEAs) with diverse compositions and porous structures fabricated via selective laser melting (SLM) additive manufacturing for wastewater treatment applications. The effects of Mn content (0, 30 at%, and 50 at%) [...] Read more.
This work investigated the mechanical and catalytic degradation properties of FeMnCoCr-based high-entropy alloys (HEAs) with diverse compositions and porous structures fabricated via selective laser melting (SLM) additive manufacturing for wastewater treatment applications. The effects of Mn content (0, 30 at%, and 50 at%) and topological structures (gyroid, diamond, and sea urchin-inspired shell) on the compression properties and catalytic efficiency of the Fe80-xMnxCo10Cr10 HEAs were discussed. The results indicated that an increase in the Mn content led to a phase structure transition that optimized mechanical properties and catalytic activities. Among the designed structures, the gyroid HEA structure exhibited the highest compressive yield strength, reaching 197 MPa. Additionally, Fe30Mn50Co10Cr10 HEA exhibited exceptional performance in catalytic degradation experiments by effectively degrading simulated pollutants with a significantly enhanced rate by 22.3% compared to other compositions. The Fe80-xMnxCo10Cr10 HEA catalyst fabricated by SLM demonstrated high stability over multiple cycles. These findings reveal that porous FeMnCoCr-based HEAs have significant potential for catalytic degradation of organic pollutants, providing valuable insights for future catalyst design and development in efficient and sustainable wastewater treatment. Full article
(This article belongs to the Special Issue Fabrication of Advanced Materials)
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14 pages, 6163 KiB  
Article
In-Volume Glass Modification Using a Femtosecond Laser: Comparison Between Repetitive Single-Pulse, MHz Burst, and GHz Burst Regimes
by Manon Lafargue, Théo Guilberteau, Pierre Balage, Bastien Gavory, John Lopez and Inka Manek-Hönninger
Materials 2025, 18(1), 78; https://doi.org/10.3390/ma18010078 - 27 Dec 2024
Viewed by 776
Abstract
In this study, we report, for the first time, to the best of our knowledge, on in-volume glass modifications produced by GHz bursts of femtosecond pulses. We compare three distinct methods of energy deposition in glass, i.e., the single-pulse, MHz burst, and GHz [...] Read more.
In this study, we report, for the first time, to the best of our knowledge, on in-volume glass modifications produced by GHz bursts of femtosecond pulses. We compare three distinct methods of energy deposition in glass, i.e., the single-pulse, MHz burst, and GHz burst regimes, and evaluate the resulting modifications. Specifically, we investigate in-volume modifications produced by each regime under varying parameters such as the pulse/burst energy, the scanning velocity, and the number of pulses in the burst, with the aim of establishing welding process windows for both sodalime and fused silica. Full article
(This article belongs to the Special Issue Fabrication of Advanced Materials)
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14 pages, 1895 KiB  
Article
Ultrasonic Atomization as a Method for Testing Material Properties of Liquid Metals
by Wojciech Presz, Rafał Szostak-Staropiętka, Anna Dziubińska and Katarzyna Kołacz
Materials 2024, 17(24), 6109; https://doi.org/10.3390/ma17246109 - 13 Dec 2024
Viewed by 960
Abstract
Ultrasonic atomization is an object of steadily increasing interest from metal powder manufacturers, both for additive manufacturing and powder metallurgy. Based on the analysis of available theoretical studies, simulations and experiments, it was noted that the average particle size after atomization and the [...] Read more.
Ultrasonic atomization is an object of steadily increasing interest from metal powder manufacturers, both for additive manufacturing and powder metallurgy. Based on the analysis of available theoretical studies, simulations and experiments, it was noted that the average particle size after atomization and the final particle size distribution depend on the process parameters (e.g., frequency, amplitude) and the parameters of the atomized fluid (e.g., viscosity, surface tension). The objective of this study is to evaluate the feasibility of using ultrasonic atomization to study the properties of liquid metals. It attempts to close a gap in existing knowledge in searching for a new, possibly simple and cost-effective method to study the properties of liquid metals and clarify the relationship between ultrasonic atomization parameters (amplitude, frequency, metal spill on vibrating surface) and obtained atomization results (average particle size, particle size distribution, atomization time). Utilizing numerical modeling as a methodology, especially the finite element method, the possibilities of using ultrasonic atomization as an instrument to determine properties of liquid metals were considered as an introduction to a series of real experiments. Modeling was applied to liquids with different properties, atomized at a chosen specific constant frequency and amplitude. The results of the simulation are in line with the current state of knowledge about ultrasonic atomization. However, in the existing studies available to the authors, there are no data that can be compared directly, but indirect comparisons confirmed the conclusions of the preliminary literature analysis. The relationship between viscosity and surface tension and the average size of the atomization processes obtained in the simulation of particles was demonstrated, thus providing a tool for the development of the presented concept: ultrasonic atomization as a research method. Research and simulation results led to the final conclusion: ultrasonic atomization can be applied to study the properties of liquid metals and this will be the subject of further research and experimentation. Full article
(This article belongs to the Special Issue Fabrication of Advanced Materials)
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19 pages, 21170 KiB  
Article
Multiple Preheating Processes for Suppressing Liquefaction Cracks in IN738LC Superalloy Fabricated by Electron Beam Powder Bed Fusion (EB-PBF)
by Yang Li, Hongyu Long, Bo Wei, Jun Zhou and Feng Lin
Materials 2024, 17(22), 5667; https://doi.org/10.3390/ma17225667 - 20 Nov 2024
Cited by 1 | Viewed by 1293
Abstract
In additive manufacturing, controlling hot cracking in non-weldable nickel-based superalloys poses a significant challenge for forming complex components. This study introduces a multiple preheating process for the forming surface in electron beam powder bed fusion (EB-PBF), employing a dual-band infrared surface temperature measurement [...] Read more.
In additive manufacturing, controlling hot cracking in non-weldable nickel-based superalloys poses a significant challenge for forming complex components. This study introduces a multiple preheating process for the forming surface in electron beam powder bed fusion (EB-PBF), employing a dual-band infrared surface temperature measurement technique instead of the conventional base plate thermocouple method. This new approach reduces the temperature drop during forming, decreasing surface cooling by 28.6% compared to traditional methods. Additionally, the precipitation of carbides and borides is reduced by 38.5% and 80.1%, respectively, lowering the sensitivity to liquefaction cracking. This technique enables crack-free forming at a lower powder bed preheating temperature (1000 °C), thereby improving the powder recycling rate by minimizing powder sintering. Microstructural analysis confirms that this method reduces low-melting eutectic formation and alleviates liquefaction cracking at high-angle grain boundaries caused by thermal cycling. Consequently, crack-free IN738 specimens with high-temperature durability were successfully achieved, providing a promising approach for the EB-PBF fabrication of crack-resistant IN738 components. Full article
(This article belongs to the Special Issue Fabrication of Advanced Materials)
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