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Metals
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Feature Paper Collection of "Advancements in Metal Additive Manufacturing"
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Feature Paper Collection of "Advancements in Metal Additive Manufacturing"

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Additive Manufacturing".

Deadline for manuscript submissions: closed (30 April 2024) | Viewed by 6265

Special Issue Editors

Dr. Hany Hassanin

E-Mail Website
Guest Editor
School of Engineering, Technology and Design, Canterbury Christ Church University, Canterbury CT1 1QU, UK
Interests: additive manufacturing (laser powder bed fusion, stereolithography, fused deposition modelling, binder jetting); microfabrication; design of experiments; CAD, FEA, MATLAB; process optimisation; materials processing; metrology and mechanical testing; product development; design for manufacturing; advanced microscopy; X-ray diffraction analysis; image analysis
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Leszek A. Dobrzanski

E-Mail Website
Guest Editor
Medical and Dental Engineering Centre for Research, Design and Production ASKLEPIOS, 44-100 Gliwice, Poland
Interests: materials engineering; nanotechnology; biomaterials; medical; dental; manufacturing and surface engineering; machine building and automation; management and organization
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Yung C. Shin

E-Mail Website
Guest Editor
School of Mechanical Engineering, Purdue University, 585 Purdue Mall, West Lafayette, IN 47907, USA
Interests: additive manufacturing; synthesis of alloys; laser processing; advanced machining; multiscale multiphysics modeling; composites; laser welding
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Laichang Zhang

grade E-Mail Website
Guest Editor
School of Engineering, Edith Cowan University, 270 Joondalup Drive, Perth, WA 6027, Australia
Interests: metal additive manufacturing; nanostructured materials; metallic biomaterials; heterogeneous catalysts; water treatment; advanced oxidation processes; metal corrosion; energy conversion
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Additive manufacturing has gained worldwide interest and seen significant growth in recent years in the number of applications and revenues. Among the additive manufacturing processes, metal additive manufacturing is the most rapidly growing sector. This Special Issue aims to collect various advances in metal additive manufacturing processes, including, but not limited to, fusion-based processes such as laser powder bed fusion, directed energy deposition, electron beam melting, and binder jet printing; as well as non-fusion-based processes such as cold spray, friction stir additive manufacturing and ultrasonic additive manufacturing. Works examining novel applications, in-process monitoring and control, physics-based predictive modeling, data-driven approaches and novel system-level design and implementation are all welcome for this Special Issue. In addition, all submissions on additive manufacturing of multi-materials combining metals and non-metals will be favorably considered.

Dr. Hany Hassanin
Prof. Dr. Leszek Adam Dobrzanski
Prof. Dr. Yung C. Shin
Prof. Dr. Lai-Chang Zhang
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. Metals 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

  • metal additive manufacturing
  • predictive modeling
  • novel applications
  • in-process monitoring
  • process design
  • multi-material additive manufacturing
  • hybrid process

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (3 papers)

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Research

17 pages, 5069 KiB  
Article
Structure and Mechanical Behavior of Heat-Resistant Steel Manufactured by Multilayer Arc Deposition
by Ilya V. Vlasov, Antonina I. Gordienko, Aleksandr V. Eremin, Vyacheslav M. Semenchuk and Anastasia E. Kuznetsova
Metals 2023, 13(8), 1375; https://doi.org/10.3390/met13081375 - 31 Jul 2023
Cited by 1 | Viewed by 1468
Abstract
The manuscript demonstrates the structure and the mechanical behavior of a material manufactured by multilayer arc deposition. Three-dimensional printing was performed using OK Autrod 13.14 wire on a substrate of heat-resistant 12Cr1MoV steel in the standard gas metal arc welding (GMAW) mode and [...] Read more.
The manuscript demonstrates the structure and the mechanical behavior of a material manufactured by multilayer arc deposition. Three-dimensional printing was performed using OK Autrod 13.14 wire on a substrate of heat-resistant 12Cr1MoV steel in the standard gas metal arc welding (GMAW) mode and in the coldArc mode with reduced heat input. The printed materials have 40–45% higher strength and 50–70% lower ductility compared to the substrate. The microhardness of the printed materials is higher than the substrate, but it is reduced at the transition regions between the deposited layers. These regions have been studied using optical microscopy and digital image correlation. Such layer boundaries are an additional factor in reducing the plasticity of the material. The increase in strength and decrease in ductility for printed materials compared to the ferrite–pearlitic substrate is associated with a high cooling rate and the formation of a mixture of acicular and allotriomorphic ferrite, which have higher hardness. The structure of the obtained layers along the height is non-uniform and undergoes changes during the deposition of new layers. The main difference between the 3D printing modes is the reduced heat input in the coldArc mode, which results in less heat accumulation and faster cooling of the wall. Thus, a more dispersed and solid structure was formed compared with GMAW. It was concluded that the cooling rate and the level of heat input are the main factors affecting the structure formation (martensitic, bainitic, or ferritic), the height and quality of the surface, and the mechanical properties of the printed wall. Full article
(This article belongs to the Special Issue Feature Paper Collection of "Advancements in Metal Additive Manufacturing")
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14 pages, 15704 KiB  
Article
Selective Laser Melting of (Fe-Si-B)/Cu Composite: Structure and Magnetic Properties Study
by Danil Erutin, Anatoly Popovich and Vadim Sufiiarov
Metals 2023, 13(2), 428; https://doi.org/10.3390/met13020428 - 19 Feb 2023
Cited by 3 | Viewed by 1525
Abstract
A mixture of original 1CP powder and 10 wt.% of pure Cu-powder was prepared and 1CP-Cu composite samples were obtained by selective laser melting using different process parameters. Comparison of pure 1CP and composite samples showed that addition of Cu halved the porosity [...] Read more.
A mixture of original 1CP powder and 10 wt.% of pure Cu-powder was prepared and 1CP-Cu composite samples were obtained by selective laser melting using different process parameters. Comparison of pure 1CP and composite samples showed that addition of Cu halved the porosity percentage of the obtained material. Distribution of Cu-phase in 1CP-matrix can be recognized as uniform in all the samples. X-ray diffraction of samples showed the presence of α-Fe solid solution, iron boride Fe2B, and crystal Cu. Scanning electron microscopy analysis also allowed to discover ordered solid solution Fe3Si in samples microstructure. Differential scanning calorimetry data showed that composite sample contains amorphous phase as opposed to pure 1CP sample manufactured using the same process parameters. Magnetic properties of samples were studied, and it was found that addition of 10 wt.% of Cu allowed to reduce magnetic field energy losses by approximately four times. Full article
(This article belongs to the Special Issue Feature Paper Collection of "Advancements in Metal Additive Manufacturing")
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20 pages, 5126 KiB  
Article
The Influence of Laser Powder Bed Fusion (L-PBF) Process Parameters on 3D-Printed Quality and Stress–Strain Behavior of High-Entropy Alloy (HEA) Rod-Lattices
by Jianrui Zhang and Bo Li
Metals 2022, 12(12), 2109; https://doi.org/10.3390/met12122109 - 8 Dec 2022
Cited by 2 | Viewed by 2675
Abstract
Laser powder bed fusion (L-PBF) additive manufacturing technology is suitable for the direct 3D printing of geometrically complex periodic micro-rod-lattices. However, controlling the geometric and performance consistency remains challenging due to manufacturability limitations, non-negligible process defects, and surface roughness, which is inconvenient to [...] Read more.
Laser powder bed fusion (L-PBF) additive manufacturing technology is suitable for the direct 3D printing of geometrically complex periodic micro-rod-lattices. However, controlling the geometric and performance consistency remains challenging due to manufacturability limitations, non-negligible process defects, and surface roughness, which is inconvenient to measure, affecting the mechanical properties and deformation behavior of the lattice structures. To improve the forming quality of the rod lattices and the consistency of repetitive 3D printing, we theoretically analyzed the causes of the defects and the effects of the L-PBF parameters on the process defects of CoCrFeNiMn high-entropy alloy micro-rods. The forming quality of the micro-rods was evaluated and classified with control experiments, and the surface roughness was measured and analyzed. Randomly protruding metal particles on the surface were mainly caused by the diffusion of laser energy, the incomplete melting of some metal powders, and/or “balling” process-induced defects caused by laser remelting. The tensile mechanical properties of typical L-PBF-printed micro-rods with different geometric characteristics were compared and evaluated. The influence of the geometric characteristics of the defects on the mechanical properties is discussed. The mechanical properties of the L-PBF-printed rod lattices were evaluated by compression experiments. It was found that the properties of different rod lattices have a positive relationship with the relative density. Full article
(This article belongs to the Special Issue Feature Paper Collection of "Advancements in Metal Additive Manufacturing")
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