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Effect of Laser Power on the Deposition of Alloy 718 Powder on Alumina Substrate Using Laser Directed Energy Deposition: A Single-Track Study
University West, Department of Engineering Science, Division of Welding Technology. (KAMPT)ORCID iD: 0000-0002-6605-1869
University West, Department of Engineering Science, Division of mechanical engineering. (KAMPT)ORCID iD: 0000-0002-1607-9177
University West, Department of Engineering Science, Division of mechanical engineering. (KAMPT)ORCID iD: 0000-0001-9065-0741
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (KAMPT)ORCID iD: 0000-0001-5521-6894
2024 (English)In: Sustainable Production through Advanced Manufacturing, Intelligent Automation and Work Integrated Learning: Proceedings of the 11th Swedish Production Symposium (SPS2024) / [ed] Joel Andersson, Shrikant Joshi, Lennart Malmsköld, Fabian Hanning, IOS Press , 2024, p. 111-121Chapter in book (Refereed)
Abstract [en]

Welding or brazing of metals to ceramics often leads to failures under aggressive conditions due to abrupt changes in physical, chemical, and thermal properties at the metal-ceramic interface. Metal-ceramic Functional Graded Materials (FGMs) replace the strict interface with a gradual transition of composition and properties, which protects the material from failures. The powder-blown Laser-Directed Energy Deposition (DED-LB) is one of the widely known Additive Manufacturing (AM) processes that offer unique features like developing FGMs and multi-material structures. Various studies have been conducted to process metalceramic FGMs using the DED-LB process but significant differences in thermal properties, varying laser-material interactions, and the possibility of formation of complex reaction products make the processing of metal-ceramic FGMs challenging. This study aims to understand the effect of laser power on a ceramic substrate, and its interaction with a metal powder introduced in the melt pool. A single track of nickel-based superalloy Alloy 718 powder was deposited on an Alumina substrate with different laser powers. The deposition was performed with and without substrate pre-heat to understand the effect of pre-treatment on deposition. Metallographic analysis was performed to reveal the microstructure of the resolidified metal mixed ceramic region

Place, publisher, year, edition, pages
IOS Press , 2024. p. 111-121
Series
Advances in Transdisciplinary Engineering, ISSN 2352-751X, E-ISSN 2352-7528 ; 52
Keywords [en]
Laser-Directed Energy Deposition, Metal-Ceramic FGMs, Alumina, Alloy 718
National Category
Manufacturing, Surface and Joining Technology
Research subject
Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-21505DOI: 10.3233/atde240158ISBN: 9781643685106 (print)ISBN: 9781643685113 (electronic)OAI: oai:DiVA.org:hv-21505DiVA, id: diva2:1852202
Note

CC BY NC 4.0

Available from: 2024-04-17 Created: 2024-04-17 Last updated: 2024-04-18

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fulltext(2687 kB)19 downloads
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Choudary Ratnala, DilipkumarHanning, FabianAndersson, JoelJoshi, Shrikant V.

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