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A systematic approach for understanding powder influence in powder bed based additive manufacturing

: Vock, S.; Jacobs, S.; Härtel, M.; Klöden, B.; Weißgärber, T.; Kieback, B.

European Powder Metallurgy Association -EPMA-:
Euro PM2018 Proceedings : 14 – 18 October 2018, Bilbao, Spain
Shrewsbury: EPMA, 2018
ISBN: 978-1-899072-50-7
International Powder Metallurgy Congress and Exhibition (Euro PM) <2018, Bilbao>
Conference Paper
Fraunhofer IFAM, Institutsteil Pulvermetallurgie und Verbundwerkstoffe Dresden ()

In order to be able to predict the powder influence on process behaviour and further on final part properties in powder bed based additive manufacturing, an empirical approach is proposed. This implies archiving powder and process related parameters of various kinds of materials in an extensive data base. The data base will serve as a source for statistical evaluation including parameter correlation and predictive modelling of powder behaviour in Laser and Electron Beam Melting (LBM and EBM) processes. In the presented work the basic structure of the data base is introduced. As a first step towards a deepened powder understanding the correlation between powder quality changes and measured powder properties has been evaluated. As a result, several powder characteristics were identified as being highly correlated to changes in particle size distributions.