Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Laser Additive Manufacturing of Intermetallic Alloys for High-Temperature Applications

Version 1 : Received: 29 January 2021 / Approved: 1 February 2021 / Online: 1 February 2021 (15:38:52 CET)

How to cite: Rittinghaus, S.; Schmelzer, J.; Wilms, M.B.; Kruger, M. Laser Additive Manufacturing of Intermetallic Alloys for High-Temperature Applications. Preprints 2021, 2021020056 (doi: 10.20944/preprints202102.0056.v1). Rittinghaus, S.; Schmelzer, J.; Wilms, M.B.; Kruger, M. Laser Additive Manufacturing of Intermetallic Alloys for High-Temperature Applications. Preprints 2021, 2021020056 (doi: 10.20944/preprints202102.0056.v1).

Abstract

Intermetallic alloys like e.g. Iron-Aluminides, Titanium-Aluminides or Molybdenum- Silizides are prospective materials for high-temperature applications. For additive manufacturing (AM) intermetallic structural materials are particularly challenging due to their high melting points, oxygen susceptibility and low temperature brittleness. The feasibility of manufacturing intermetallic Mo-Si-B alloys with the laser additive manufacturing process of direct energy deposition (DED) is demonstrated and recent results in characterizing rapidly solidified material with respect to correlations between process, composition and microstructures are presented. The possibility to dope the material with Yttrium oxide (Y2O3) for dispersion is successfully demonstrated. Current challenges, e.g. homogenous distribution of alloying elements and applicability are addressed.

Subject Areas

Mo-Si-B alloys; laser additive manufacturing; high-temperature mechanical properties; oxide dispersion strengthening

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