Vibrational Microfeeding of Polymer and Metal Powders for Locally Graded Properties in Powder-Based Additive Manufacturing

Subject of this work is the contact mechanical properties and flowability of polymer and metal powders when they are dispensed on the surface of a powder bed for use in laser-based powder bed fusion in additive manufacturing. Generating local part properties in metal as well as polymer-based powder...

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Bibliographic Details
Published inJournal of materials engineering and performance Vol. 30; no. 12; pp. 8798 - 8809
Main Authors Rothfelder, R., Lanzl, L., Selzam, J., Drummer, D., Schmidt, M.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.12.2021
Subjects
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion and Coatings
Engineering Design
Materials Science
Quality Control
Reliability
Safety and Risk
Tribology
powder metallurgy
powder bed fusion
additive manufacturing
polymers and plastics
in situ alloying
titanium
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ISSN1059-9495
1544-1024
DOI10.1007/s11665-021-06271-5

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Summary:Subject of this work is the contact mechanical properties and flowability of polymer and metal powders when they are dispensed on the surface of a powder bed for use in laser-based powder bed fusion in additive manufacturing. Generating local part properties in metal as well as polymer-based powder bed fusion processes is of high interest, so an approach is made to locally add additives by a vibrational microfeeding system for metal and polymer powders. To realize a controlled powder discharge, the behavior of additives, which are dropped on a surface and on a powder bed is analyzed. Influencing factors for mass flow of the powders will be excitation frequency, excitation amplitude and capillary diameter on the side of experimental setup as well as particle size distribution and physical properties on the material side.
ISSN:1059-9495
1544-1024
DOI:10.1007/s11665-021-06271-5