| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
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2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Presentation Title |
Analytical Modeling of Cooling Rates in PBF-LB/M of Bulk Metallic Glasses |
| Author(s) |
Hanna Schonrath, Jan Wegner, Maximilian Frey, Erika Soares Barreto, Arno Elspaß, Norman Schnell, Benjamin H. H. R. Erdmann, Julian Neises, Nils Ellendt, Ralf Busch, Stefan Kleszczynski |
| On-Site Speaker (Planned) |
Hanna Schonrath |
| Abstract Scope |
Additive manufacturing through laser powder bed fusion (PBF-LB/M) inheres great potential for the processing of bulk metallic glasses (BMGs). The size-independent high cooling rates during processing issue a breakthrough for amorphous fabrication of large and complex structural components. Albeit partial crystallization is frequently observed in additively manufactured BMGs, which limits the resulting mechanical properties. In this matter the complex thermal history during processing states a remaining uncertainty. Besides temperature measurements and numerical estimation, analytical models might be useful for a deeper understanding of the transient temperature evolution. In this work, an iterative solution to the analytical Rosenthal equation was developed and applied to ZrCuAlNb- and CuTiZrNi-BMGs to predict melt pool dimensions and cooling rates during PBF-LB/M. Therefore, temperature dependent thermal properties were determined via laser flash measurements. The effective absorptivity of the two materials was additionally measured and single line experiments were performed as a validation for the approach. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |