Results of satellite reduction strategy on gas atomized powder quality for additive manufacturing

Iver E. Anderson, Bo Kong, Timothy E. Prost, Jordan A. Tiarks, Trevor M. Riedemann, David J. Byrd, Ross D. Anderson, Emma M.H. White

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Production of pre-alloyed powder with top quality is critical for enabling additive manufacturing (AM) to reach its full potential. Improvements to close-coupled gas atomization (CC-GA) to suppress powder “satellite” attachments can contribute an important powder quality enhancement for a powder production method with potential for low-cost. Gas atomized powders with minimal satellite projections will have smoother spherical shape and are presumed to exhibit improved flowability and layer spreading characteristics, depending on the AM method. This flowing or spreading characteristic can be measured by funnel flow devices or powder rheometry. Both modeling approaches and experimental strategies have been developed in this study to address powder satellite suppression. These include simulation of time dependent atomizer spray chamber flow pattern development and the addition of supplemental gas flows and flow modification devices into the spray chamber. Recent progress on satellite mitigation for Ni-based alloy powders are reported.

Original languageEnglish
Title of host publicationAdvances in Powder Metallurgy and Particulate Materials - 2019
Subtitle of host publicationProceedings of the 2019 International Conference on Powder Metallurgy and Particulate Materials
PublisherMetal Powder Industries Federation
Pages144-162
Number of pages19
ISBN (Electronic)9781943694211
StatePublished - 2020
Externally publishedYes
Event2019 International Conference on Powder Metallurgy and Particulate Materials, POWDERMET 2019 - Phoenix, United States
Duration: 23 Jun 201926 Jun 2019

Publication series

NameAdvances in Powder Metallurgy and Particulate Materials - 2019: Proceedings of the 2019 International Conference on Powder Metallurgy and Particulate Materials

Conference

Conference2019 International Conference on Powder Metallurgy and Particulate Materials, POWDERMET 2019
CountryUnited States
CityPhoenix
Period23/06/1926/06/19

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