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Feedstock Development for Material Extrusion-Based Printing of Ti6Al4V Parts

Eickhoff, Ralf 1; Antusch, Steffen 1; Baumgärtner, Siegfried 1; Nötzel, Dorit 1; Hanemann, Thomas 2
1 Karlsruher Institut für Technologie (KIT)
2 Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

In this work, a holistic approach for the fabrication of dense Ti6Al4V parts via material
extrusion methods (MEX), such as fused filament fabrication (FFF) or fused feedstock deposition
(FFD), will be presented. With respect to the requirements of the printing process, a comprehensive
investigation of the feedstock development will be described. This covers mainly the amount ratio
variation of the main binder components LDPE (low-density polyethylene), HDPE (high-density
polyethylene), and wax, characterized by shear and oscillation rheology. Solid content of 60 vol%
allowed the 3D printing of even more complex small parts in a reproducible manner. In some cases,
the pellet-based FFD seems to be superior to the established FFF. After sintering, a density of 96.6%
of theory could be achieved, an additional hot isostatic pressing delivered density values better than
99% of theory. The requirements (mechanical properties, carbon, and oxygen content) for the usage
of medical implants (following ASTM F2885-17) were partially fulfilled or shortly missed.


Verlagsausgabe §
DOI: 10.5445/IR/1000150840
Veröffentlicht am 23.09.2022
Originalveröffentlichung
DOI: 10.3390/ma15186442
Scopus
Zitationen: 6
Web of Science
Zitationen: 6
Dimensions
Zitationen: 6
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 1996-1944
KITopen-ID: 1000150840
HGF-Programm 43.34.01 (POF IV, LK 01) Lightweight Materials for Structural and Medical Application
Erschienen in Materials
Verlag MDPI
Band 15
Heft 18
Seiten Art.-Nr.: 6442
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 16.09.2022
Schlagwörter material extrusion (MEX); FFF/FFD; 3D printing; additive manufacturing; titanium alloys; Ti6Al4V
Nachgewiesen in Dimensions
Scopus
Web of Science
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