journal article·2022-06Open access

Characterization of Ti–6Al–4V Fabricated by Multilayer Laser Powder‐Based Directed Energy Deposition

Luis Alexander Ávila Calderón, Benjamin Graf, Birgit Rehmer, Torsten Petrat, Birgit Skrotzki, Michael Rethmeier

Advanced Engineering Materials· Volume 24· Issue 6

Abstract

Laser powder‐based directed energy deposition (DED‐L) is increasingly being used in additive manufacturing (AM). As AM technology, DED‐L must consider specific challenges. It must achieve uniform volume growth over hundreds of layers and avoid heat buildup of the deposited material. Herein, Ti–6Al–4V is fabricated using an approach that addresses these challenges and is relevant in terms of transferability to DED–L applications in AM. The assessment of the obtained properties and the discussion of their relationship to the process conditions and resulting microstructure are presented. The quality of the manufacturing process is proven in terms of the reproducibility of properties between individual blanks and with respect to the building height. The characterization demonstrates that excellent mechanical properties are achieved at room temperature and at 400 °C.
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Research context

OpenAlex topics: Additive Manufacturing Materials and Processes · High Entropy Alloys Studies · Welding Techniques and Residual Stresses

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Engineering Bundesanstalt für Materialforschung und –prüfung (BAM) Unter den Eichen 87 12205 Berlin Germany

Division of Joining and Coating Technology Fraunhofer Institute for Production Systems and Design Technology Pascalstraße 8-9 10587 Berlin Germany

Department of Component Safety Bundesanstalt für Materialforschung und –prüfung (BAM) Unter den Eichen 87 12205 Berlin Germany

Institute of Machine Tools and Factory Management Technische Universität Berlin Straße des 17. Juni 10623 Berlin Germany

Funding

Bundesanstalt für Materialforschung und -Prüfung

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