Simulating the microstructural evolution of a Selective Laser Melted AA-2024

Omar Lopez, Uriel Martinez Hernandez, Jose Ramirez, Christophe Pinna, Kamran Mumtaz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

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 languageEnglish
Title of host publicationProceedings of the 27th Annual International Solid Freeform Fabrication Symposium, 2016 - an Additive Manufacturing Conference
EditorsD. L. Bourell, R. H. Crawford, C. C. Seepersad, J. J. Beaman, S. Fish, H. Marcus
Pages257-267
Number of pages11
Publication statusPublished - Aug 2016
Event27th Annual International Solid Freeform Fabrication Symposium 2016 - an Additive Manufacturing Conference - University of Texas, Austin, USA United States
Duration: 8 Aug 201610 Aug 2016

Conference

Conference27th Annual International Solid Freeform Fabrication Symposium 2016 - an Additive Manufacturing Conference
CountryUSA United States
CityAustin
Period8/08/1610/08/16

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  • Cite this

    Lopez, O., Martinez Hernandez, U., Ramirez, J., Pinna, C., & Mumtaz, K. (2016). Simulating the microstructural evolution of a Selective Laser Melted AA-2024. In D. L. Bourell, R. H. Crawford, C. C. Seepersad, J. J. Beaman, S. Fish, & H. Marcus (Eds.), Proceedings of the 27th Annual International Solid Freeform Fabrication Symposium, 2016 - an Additive Manufacturing Conference (pp. 257-267)