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Title: | Development of a gas metal arc based prototype for direct energy deposition with micrometric wire | Authors: | Dornelas, Paulo Henrique Grossi Oliveira, J. P. Silva, Tadeu Castro da Ramos, Ana Sofia Santos, Telmo G. |
Keywords: | Micro additive manufacturing; Direct energy deposition; Process downscaling | Issue Date: | 2024 | Publisher: | Elsevier | Project: | Authors acknowledge the Portuguese Fundaç˜ao para a Ciˆencia e a Tecnologia (FCT - MCTES) for its financial support via the project UID/ EMS/00667/2019 (UNIDEMI). P. H. G. Dornelas acknowledges FCT - MCTES for funding the PhD grant 2021.05298.BD. JPO acknowledges funding by national funds from FCT - Fundaç˜ao para a Ciˆencia e a Tecnologia, I.P., in the scope of the projects LA/P/0037/2020, UIDP/ 50025/2020 and UIDB/50025/2020 of the Associate Laboratory Institute of Nanostructures, Nanomodelling and Nanofabrication – i3N. This activity has received funding from the European Institute of Innovation and Technology (EIT) RawMaterials through the project Smart WAAM: Microstructural Engineering and Integrated Non-Destructive Testing. This body of the European Union receives support from the European Union’s Horizon 2020 research and innovation program. This research is sponsored by national funds through FCT - Fundaç˜ao para a Ciˆencia e a Tecnologia , under projects UIDB/00285/2020 and LA/P/0112/2020 | Serial title, monograph or event: | Journal of Materials Research and Technology | Volume: | 30 | Abstract: | In recent years, efforts have been focused on the development of metal additive manufacturing (AM) processes to address the growing trend of miniaturization in industries such as aerospace and electronics. Thus, new technologies have been developed based on a downscaled approach using direct energy deposition (DED) processes, now referred to as μ-DED. In this context, the development of a downscaled DED prototype based on gas metal arc (GMA) working with micrometric wires (μ-GMA) has the potential to unify the positive characteristics of GMA-based DED, increasing the complexity of the design and resolution of the produced parts. Therefore, this work focuses on developing a μ-GMA prototype and assessing its technical feasibility. This paper describes the development of the μ-GMA prototype, characterizes the metallic transfer mode, and statistically analyzes the effect of deposition parameters on bead width and height. Additionally, microstructural analysis, Vickers microhardness, and reduced Young’s modulus tests were performed. The μ-GMA prototype demonstrated the capability to deposit beads with an approximate width of 1 mm, nearly 5 times thinner than standard GMA-based DED deposition, with a build rate of 30 cm3/h, which is lower than GMA-based DED but higher than other μ-DED processes. Furthermore, the mechanical properties of the μ-GMA depositions are comparable to regular GMAbased DED parts. | URI: | https://hdl.handle.net/10316/115082 | ISSN: | 22387854 | DOI: | 10.1016/j.jmrt.2024.04.056 | Rights: | openAccess |
Appears in Collections: | FCTUC Eng.Mecânica - Artigos em Revistas Internacionais I&D CEMMPRE - Artigos em Revistas Internacionais |
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Development of a gas metal arc based prototype for direct energy deposition with micrometric wire.pdf | 8.79 MB | Adobe PDF | View/Open |
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