About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Presentation Title |
Exploring Effects of Part Size for Laser Powder Bed Fusion Manufactured Bismuth Telluride using In-Situ Thermal Tomography |
Author(s) |
Clayton Perbix, Saniya LeBlanc, Joe Walker, Joy Gockel |
On-Site Speaker (Planned) |
Clayton Perbix |
Abstract Scope |
Bismuth telluride (Bi2Te3) is an important material used in thermoelectric applications. However, the effect on microstructure and ultimately thermoelectric performance when it is additively manufactured using laser powder bed fusion (PBF-LB) is not well understood. This study investigates the effect of various processing parameters and part geometries on the quality and microstructure of PBF-LB bismuth telluride parts. In-situ process monitoring was performed using thermal tomography imaging to provide information about sample thermal behavior. Results showed that increasing part size led to undesirable printing defects, and individual parts exhibited a broad range of microstructural features. Thermal tomography data showed that larger layer cross-sections retained more heat during processing, a result contradictory to what has been shown in structural metals processing. Furthering our understanding of the effect of part geometry during PBF-LB manufacturing will improve our ability to create more complex structures, and enable higher performance thermoelectric devices. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |