Lopez, O., Martínez-Hernández, U., Ramírez, J. et al. (2 more authors) (2016) Simulating the microstructural evolution of a Selective Laser Melted AA-2024. In: Solid Freeform Fabrication 2016: Proceedings of the 27th Annual International. Solid Freeform Fabrication Symposium – An Additive Manufacturing Conference, August 8-10, 2016, Austin, Texas. Laboratory for Freeform Fabrication and University of Texas at Austin , pp. 257-267.
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 AA- 2024 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.
Metadata
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| Copyright, Publisher and Additional Information: | © 2016 Laboratory for Freeform Fabrication and University of Texas at Austin | ||||
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| Institution: | The University of Sheffield | ||||
| Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield) | ||||
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| Depositing User: | Symplectic Sheffield | ||||
| Date Deposited: | 21 Nov 2016 16:48 | ||||
| Last Modified: | 21 Nov 2016 22:11 | ||||
| Published Version: | http://sffsymposium.engr.utexas.edu/TOC2016 | ||||
| Status: | Published | ||||
| Publisher: | Laboratory for Freeform Fabrication and University of Texas at Austin | ||||
| Refereed: | Yes |
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