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Crystals
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Additive Manufacturing: State-of-the-Art 2024
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Additive Manufacturing: State-of-the-Art 2024

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystalline Metals and Alloys".

Deadline for manuscript submissions: 10 December 2024 | Viewed by 2281

Special Issue Editors

Prof. Dr. C. Suryanarayana

E-Mail Website
Guest Editor
Department of Mechanical and Aerospace Engineering, University of Central Florida, Orlando, FL, USA
Interests: non-equilibrium processing of materials; additive manufacturing; selective laser melting; metallic glasses; materials characterization
Prof. Dr. Prashanth Konda Gokuldoss

E-Mail Website
Guest Editor
Department of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate Tee 5, 19086 Tallinn, Estonia
Interests: powder metallurgy; additive manufacturing; selective laser melting; meta-stable materials; amorphous alloys
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Additive manufacturing (AM), where materials are fabricated using the layer-by-layer approach to fabricate near-net-shaped components in 3D/4D, has gained popularity in recent years. AM comprises several processes such as laser-based processes like laser fusion deposition modeling (FDM), direct light polymerization (DLP), powder bed fusion (LPBF)/selective laser melting (SLM), direct energy deposition (DED), laser engineering near-net-shaped processing (LENS), selective laser sintering (SLS), direct metal laser deposition (DMLS), etc. With increasing demand for both materials (development of new materials aligned with the processing conditions) and processes (improvement in processing conditions), advancements in the field are taking place at a very rapid pace. Hence, this topic warrants a Special Issue focusing on the progress in all aspects of additive manufacturing of materials.

Scientific contributions are invited from scientists, researchers, engineers, and industry professionals to disseminate recent innovations and developments in the areas of additive manufacturing of materials including alloy design for additive manufacturing, in situ process monitoring, process optimization, machine learning, artificial intelligence, and Big Data analysis of additive manufacturing processes. Manuscripts on computational aspects including simulations/modeling are also welcome.

Prof. Dr. C. Suryanarayana
Prof. Dr. Prashanth Konda Gokuldoss
Guest Editors

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. Crystals 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

  • alloy design for additive manufacturing
  • in-situ process monitoring
  • process optimization
  • big data analysis on additive manufacturing processes
  • machine learning/artificial intelligence
  • materials characterization and testing
  • process modeling/simulation
  • additive manufacturing
  • alloy design
  • process modeling
  • process optimization
  • materials characterization
  • materials testing

Published Papers (2 papers)

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25 pages, 76207 KiB  
Article
Research on the Input-Transformation-Output Process of Additive Manufacturing: Comparing PLA/Polysmooth and Resin Printed Rings
by Camilo Rivera, Jairo Nuñez Rodriguez and Angel Ortiz Bas
Crystals 2024, 14(1), 7; https://doi.org/10.3390/cryst14010007 - 21 Dec 2023
Viewed by 1100
Abstract
This research delves into the transformative potential of additive manufacturing (AM) within the jewelry industry, focusing on materials such as PLA, PolySmooth, and resin to process a ring. The study encompasses an analysis of the materials, the role of the Scanning Electron Microscope [...] Read more.
This research delves into the transformative potential of additive manufacturing (AM) within the jewelry industry, focusing on materials such as PLA, PolySmooth, and resin to process a ring. The study encompasses an analysis of the materials, the role of the Scanning Electron Microscope (SEM), the CAD design stage, printers, post-processing techniques, and the Input-Transformation-Output (ITO) process. SEM plays a crucial role in understanding material behavior at a micro-level, offering invaluable insights into its selection. The CAD design stage is foundational, providing a precise digital representation before physical production. Additive manufacturing showcases advantages over traditional methods, including design flexibility and production. Various printers and post-processing methods contribute to enhancing the quality and aesthetics of the final products. The Input-Transformation-Output process emerges as a strategic approach for efficient AM implementation. This study highlights the need for the continued exploration and integration of AM, emphasizing its potential to reshape how jewelry is designed, manufactured, and experienced, thereby providing a foundation for further research and advancements in this transformative field. Additionally, each stage of the Input-Transformation-Output process of Polysmooth, PLA, and resin ring prototypes is studied. Full article
(This article belongs to the Special Issue Additive Manufacturing: State-of-the-Art 2024)
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18 pages, 12510 KiB  
Essay
Effect of Solution Annealing Time on the Microstructure and Mechanical Properties of Selective-Laser-Melted 2205 Duplex Stainless Steel
by Huanhuan Li, Jinyuan Ma, Guang Li, Wenzhu Zhang, Xianheng Bao and Yu Shi
Crystals 2024, 14(3), 229; https://doi.org/10.3390/cryst14030229 - 28 Feb 2024
Viewed by 716
Abstract
The 2205 duplex stainless steel (DSS) produced by selective laser melting (SLM) exhibits high strength (1078.8 MPa) but poor plasticity (15.2%) owing to the high cooling rate during SLM, which inhibits the formation of austenite and creates a nearly entirely ferritic microstructure. The [...] Read more.
The 2205 duplex stainless steel (DSS) produced by selective laser melting (SLM) exhibits high strength (1078.8 MPa) but poor plasticity (15.2%) owing to the high cooling rate during SLM, which inhibits the formation of austenite and creates a nearly entirely ferritic microstructure. The dual-phase nature can be restored through solution annealing, which enables well-matched strength and plasticity, but which has not been extensively studied. We investigate the effects of 5 min, 30 min, and 120 min of solution annealing at 1000 °C on the dual-phase ratio, grain size, texture strength, inclusions, grain boundary characteristics, and mechanical properties of SLM-manufactured 2205 DSS. After 30 min of solution annealing, the elongation increased to 32.2% owing to the restoration of the dual-phase structure, the reduction in dislocation density, the weakening of texture, and the decrease in grain size. Increasing solution annealing time also corresponded to a decrease in the ultimate tensile strength (from 831.7 to 787.5 MPa) and yield strength (from 610.3 to 507.8 MPa) due to grain coarsening and the gradual transformation of ferrite to austenite. Furthermore, the mechanism of the transformation from ferrite to austenite was proposed, and it was observed that the transformation of MnSiO3 to MnCrO4 provided nucleation sites for austenite. Full article
(This article belongs to the Special Issue Additive Manufacturing: State-of-the-Art 2024)
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