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In-situ compositional tuning of functionally graded lamellas by electron beam powder bed fusion
Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering, Mathematics, and Science Education (2023-). (STRC)ORCID iD: 0000-0003-3218-875X
Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering, Mathematics, and Science Education (2023-). (STRC)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering, Mathematics, and Science Education (2023-). (STRC)
2023 (English)Conference paper, Poster (with or without abstract) (Refereed)
Sustainable development
Hållbar utveckling
Abstract [en]

Although multi-material additive manufacturing (AM) recently has gained a lot of attention, it is still not commercially available for electron beam powder bed fusion (E-PBF). The controlled vacuum environment and fast beam deflection rates in E-PBF allows for steering the melting in each manufactured point. However, very few attempts have been made to create multi-materials by E-PBF. This study investigates the feasibility of using a small sized gravity-fed hopper setup to create multi-material components. The proposed approach includes loading two hoppers with dissimilar metal feedstock and controlling the fetching of specific powders layer-by-layer. The aim of this work is to investigate if this approach can be used to generate direct or gradient shifts that allows to create lamellas of different chemical compositions within one continuous build process. In doing so, samples with 316L to Ti6Al4V and 316L to V4E gradients were manufactured in different lamellar fashions. Microscopy, micro hardness and energy dispersive X-ray were implemented to evaluate the results. The analysis showed a high degree of blending of the two precursor powders during the build process which affected the final material properties. Further refinement of the method is needed, especially when it comes to powder dispensing and control during the build process.

Place, publisher, year, edition, pages
Stockholm, 2023.
Keywords [en]
Steel based gradient materials, Stainless steel, 316L, V4E, Tool steel
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:miun:diva-46818OAI: oai:DiVA.org:miun-46818DiVA, id: diva2:1726597
Conference
The Swedish Arena for Additive Manufacturing of Metals 2023
Projects
Fun-LamAvailable from: 2023-01-13 Created: 2023-01-13 Last updated: 2023-02-20Bibliographically approved

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Sjöström, WilliamBotero Vega, Carlos Alberto

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Sjöström, WilliamBotero Vega, Carlos AlbertoJohansson, Filip
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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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Language
  • de-DE
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  • en-US
  • fi-FI
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