About this Abstract |
Meeting |
2020 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
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Presentation Title |
Coherent Scanning Interferometry for Characterization of Recycled Metal Powder and Reusability Assessment in Additive Manufacturing |
Author(s) |
Susana J Castillo, Anna Hayes, Rongguang Liang, Gregory Colvin, Krishna Muralidharan, Douglas A Loy, Barrett G Potter, Christopher M. Shanor |
On-Site Speaker (Planned) |
Anna Hayes |
Abstract Scope |
Direct Metal Laser Sintering (DMLS) is a widely used additive manufacturing (AM) method. DMLS produces unused metal powder that can undergo significant change in particle size, particle chemistry and morphology. These changes determine the extent of reusability of the powder as a function of cycle-number (the number of cycles over which the powder has been re-used). Using Coherent Scanning Interferometry (CSI), the evolution in particle size distribution and morphology as a function of number of cycles is studied for Inconel 718. It is seen that CSI provides an effective, accurate and a much faster method as compared to traditional electron microscopy and optical techniques; more importantly it provides the ability to be integrated with existing DMLS systems to enable ‘in situ’ monitoring of the powder sintering process. The efficacy of CSI for AM monitoring will be discussed and recommendations for powder reuse will be provided. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |