About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Advanced Characterization with Synchrotron, Neutron, and In Situ Laboratory-scale Techniques
|
Presentation Title |
Advanced Techniques for Characterization of SLM Manufactured Alumina |
Author(s) |
Malgorzata Makowska, Kevin Florio, Stefan Pfeiffer, Thomas Graule, Konrad Wegener, Federica Marone, Dario Ferreira Sanchez , Nicola Pietro Maria Casati, Helena Moens Van Swygenhoven |
On-Site Speaker (Planned) |
Malgorzata Makowska |
Abstract Scope |
Applying the Selective Laser Melting (SLM) technology to ceramics is challenging due to not fully understood mechanisms of interaction of the powder with laser light, high melting temperature and low thermal shock resistance. In order to optimize the process, studies of micro- and macrostructure of the ingredient powder and the printed parts are essential. This is achieved by employing advanced synchrotron techniques. The powder used for SLM is composed of alumina granules spray-dried from a mixture of 3-sizescales of Al2O3 particles doped with metal oxide nanoparticles. The composition and crystallographic structure of the granules and printed parts is studied by means of combined micro-XRD/micro-XRF 2D and 3D imaging (microXAS, PSI) and high-resolution powder diffraction (MS beamline, PSI). These studies demonstrated a uniform dopant distribution in as-produced alumina granules and capability to modify it prior to laser treatment. Quantitative analysis of porosity and cracks is performed by synchrotron tomography (TOMCAT, PSI). |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |