Abstract
We employed phase-filed models to simulate microstructure evolution and solidification behaviour of AlSi10Mg alloy produced using direct metal laser sintering (DMLS) technique. We explored numerically, the dendritic morphology and orientations for a range of cooling rates and thermal gradients, focusing on the columnar-to-equiaxed transition (CET) of DMLS-AlSi10Mg. A new efficient numerical approach was also introduced to model the heterogenous nucleation of inoculant particles that triggers CET. The results of this work are expected to provide a reference for a future study on the effect of the building direction and scanning strategy on the microstructure and texture of DMLS-AlSi10Mg.
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Acknowledgements
The authors would like to thank Natural Sciences and Engineering Research Council of Canada (NSERC) grant number RGPIN-2016-04221 and New Brunswick Innovation Foundation (NBIF) grant number RIF2017-071 for providing sufficient funding to execute this work. We also thank HPC McGill (www.hpc.mcgill.ca) and Compute Canada (www.computecanada.ca) for computing resources.
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© 2019 The Minerals, Metals & Materials Society
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Azizi, H., Provatas, N., Mohammadi, M. (2019). Phase-Field Simulation of Microstructure Evolution in Direct Metal Laser Sintered AlSi10Mg. In: TMS 2019 148th Annual Meeting & Exhibition Supplemental Proceedings. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05861-6_28
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DOI: https://doi.org/10.1007/978-3-030-05861-6_28
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