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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
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- Choudary Ratnala, Dilipkumar, Doktorand (author)
- Högskolan Väst,Avdelningen för svetsteknologi (SV),KAMPT
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- Hanning, Fabian (author)
- Högskolan Väst,Avdelningen för maskinteknik,KAMPT
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- Andersson, Joel, 1981- (author)
- Högskolan Väst,Avdelningen för maskinteknik,KAMPT
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- (creator_code:org_t)
- IOS Press, 2024
- 2024
- English.
- In: Sustainable Production through Advanced Manufacturing, Intelligent Automation and Work Integrated Learning. - : IOS Press. - 9781643685106 - 9781643685113 ; , s. 111-121
- Book chapter (peer-reviewed)
Abstract
Subject headings
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- 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
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Keyword
- Laser-Directed Energy Deposition
- Metal-Ceramic FGMs
- Alumina
- Alloy 718
- Production Technology
- Produktionsteknik
Publication and Content Type
- ref (subject category)
- kap (subject category)
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