About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Advanced Characterization with Synchrotron, Neutron, and In Situ Laboratory-scale Techniques III
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Presentation Title |
In-situ Neutron Studies on Metallic Materials during Laser Powder Bed Fusion |
Author(s) |
Shieren Sumarli, Efthymios Polatidis, Steven Van Petegem, Roland Logé, Markus Strobl |
On-Site Speaker (Planned) |
Shieren Sumarli |
Abstract Scope |
The importance of a deep understanding of the influence of processing parameters on microstructural changes during the laser powder bed fusion (LPBF) process motivates in-situ studies that were typically carried out using high-speed X-rays. However, as penetration depths of X-rays are limited to superficial observations, the need of examining the bulk as layers continue being printed stipulates for other techniques capable of penetrating deep up to a few cm, i.e. with neutrons. This contribution will showcase the concept, capability and case study of the first-ever in-house-built downsized selective laser melting device at the Paul Scherrer Institut in Switzerland specifically designed for in-situ neutron studies (n-SLM). The device allows, for example, in-situ strain characterization with neutron diffraction and Bragg edge imaging, magnetic phase fraction quantification with polarization contrast neutron imaging and defects visualization with neutron dark-field imaging, providing insight for not only additive manufacturing but also non-destructive materials characterization communities. |
Proceedings Inclusion? |
Planned: |