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)
|
Presentation Title |
Development of Powder Density Control L-PBF Methods for Tungsten Powder |
Author(s) |
Chiyen Kim, Philip Morton, Wicker Ryan, Ho Lee |
On-Site Speaker (Planned) |
Chiyen Kim |
Abstract Scope |
Numerous studies and developments have been carried out on metal 3D printing technology with respect to the various metals. However, for refractory metals with high melting point materials, such as tungsten or molybdenum, there hasn't been much advancement in additive manufacturing technology. Even when the powder and base have been heated up, a major crack will still be created if the LPBF method is used because the refractory metal has a very high sintering temperature and there is an excessive temperature difference between the melting pool and the surrounding area. This study proposed methods for laser fusion of densified powder after compressing it to increase density, based on conventional powder metallurgy. Experiments were carried out on tungsten powder at various compression densities and pressures, gradually increasing to a green density. The results of the experiment will be presented and discussed at this conference. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |