Abstract
A two-dimensional Cellular Automata (CA) – Finite Element (FE) (CA-FE) coupled model has been developed in order to predict the microstructure formed during melting of a powdered AA2024 feedstock using the Additive Manufacturing (AM) process Selective Laser Melting (SLM). The presented CA model is coupled with a detailed thermal FE model computing heat flow characteristics of the SLM process. The developed model takes into account the powder-to-liquidto-solid transformation, tracks the interaction between several melt pools within a melted track, and several tracks within various layers. It was found that the simulated microstructures bared a close resemblance with fabricated AA-2024 SLM samples. With these observed capabilities of the model, the porosity within a SLM produced part can be predicted, and used to optimise the fabrication parameters of a sample.
Original language | English |
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Title of host publication | Proceedings of the 27th Annual International Solid Freeform Fabrication Symposium, 2016 - an Additive Manufacturing Conference |
Editors | D. L. Bourell, R. H. Crawford, C. C. Seepersad, J. J. Beaman, S. Fish, H. Marcus |
Pages | 257-267 |
Number of pages | 11 |
Publication status | Published - Aug 2016 |
Event | 27th Annual International Solid Freeform Fabrication Symposium 2016 - an Additive Manufacturing Conference - University of Texas, Austin, USA United States Duration: 8 Aug 2016 → 10 Aug 2016 |
Conference
Conference | 27th Annual International Solid Freeform Fabrication Symposium 2016 - an Additive Manufacturing Conference |
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Country/Territory | USA United States |
City | Austin |
Period | 8/08/16 → 10/08/16 |