13–17 Sept 2021 Virtual Conference
Virtual
Europe/Vienna timezone
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γ-TiAl powder characterization in order to explain a case of poor processability by Electron Beam Melting

13 Sept 2021, 15:20
20m
Room 8

Room 8

Oral Presentation C1. Additive manufacturing processes and modelling (incl. C2 & D10) C1_Additive manufacturing processes and modelling

Speaker

Mr Cristian Ghibaudo (Department of Applied Science and Technology, Politecnico di Torino)

Description

In powder bed additive manufacturing technique, the powder characteristics can determine the success or the failure of the job. In the Electron Beam Melting (EBM) process is generally used spherical powder with a particular size distribution of 40-150µm. During the EBM process the powder is spread onto the platform by the rake, therefore is essential to use powders with optimal rheometric properties and powder quality is a key aspect that strongly affects the processability.
In this work, different γ-TiAl powders coming from different suppliers as well as different lots of the same suppliers were characterized in terms of flowability by Hall flow, apparent density, tap density, grain size distribution by granulometer, morphology properties of the particles as well as characterization of the internal defects to correlate the result with processability in the EBM A2X machine.

Speaker Country Italia

Author

Mr Cristian Ghibaudo (Department of Applied Science and Technology, Politecnico di Torino)

Co-authors

Mr Antonio Sivo (Department of Applied Science and Technology, Politecnico di Torino) Prof. Daniele Ugues (Department of Applied Science and Technology, Politecnico di Torino) Dr Giulio Marchese (Department of Applied Science and Technology, Politecnico di Torino) Prof. Sara Biamino (Department of Applied Science and Technology, Politecnico di Torino)

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