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
| Item Type: | Proceedings Paper |
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| Authors/Creators: |
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| Copyright, Publisher and Additional Information: | © 2016 Laboratory for Freeform Fabrication and University of Texas at Austin |
| Dates: |
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| Institution: | The University of Sheffield |
| Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield) |
| Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) NONE |
| 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 |
| Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:107712 |
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