The DOI matches its Crossref record; 22 of the 22 references it cites were found in a registry or an index.
Laser powder-bed fusion additive manufacturing: Physics of complex melt flow and formation mechanisms of pores, spatter, and denudation zones
Open accessAbstract
Abstract This study demonstrates the significant effect of the recoil pressure and Marangoni convection in laser powder bed fusion (L-PBF) of 316L stainless steel. A three-dimensional high fidelity powder-scale model reveals how the strong dynamical melt flow generates pore defects, material spattering (sparking), and denudation zones. The melt track is divided into three sections: a topological depression, a transition and a tail region, each being the location of specific physical effects. The inclusion of laser ray-tracing energy deposition in the powder-scale model improves over traditional volumetric energy deposition. It enables partial particle melting, which impacts pore defects in the denudation zone. Different pore formation mechanisms are observed at the edge of a scan track, at the melt pool bottom (during collapse of the pool depression), and at the end of the melt track (during laser power ramp down). Remedies to these undesirable pores are discussed. The results are validated against the experiments and the sensitivity to laser absorptivity is discussed.
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Cites
A study of the microstructural evolution during selective laser melting of Ti–6Al–4V
Thijs, L., Verhaeghe, F., Craeghs, T., Humbeeck, J. V., & Kruth, J.-P. (2010) · Acta Materialia · doi:10.1016/j.actamat.2010.02.004 · Cited by 2,929
3-D printing: The new industrial revolution
Berman, B. (2012) · Business Horizons · doi:10.1016/j.bushor.2011.11.003 · Cited by 2,481
Thijs, L., Kempen, K., Kruth, J.-P., & Van Humbeeck, J. (2013) · Acta Materialia · doi:10.1016/j.actamat.2012.11.052 · Cited by 1,917
Observation of keyhole-mode laser melting in laser powder-bed fusion additive manufacturing
King, W. E., Barth, H. D., Castillo, V. M., Gallegos, G. F., Gibbs, J. W., Hahn, D. E., Kamath, C., & Rubenchik, A. M. (2014) · Journal of Materials Processing Technology · doi:10.1016/j.jmatprotec.2014.06.005 · Cited by 1,616
Self-citationConsolidation phenomena in laser and powder-bed based layered manufacturing
Kruth, J.-P., Levy, G., Klocke, F., & Childs, T. H. C. (2007) · CIRP Annals · doi:10.1016/j.cirp.2007.10.004 · Cited by 1,444
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Self-citationQiu, C., Panwisawas, C., Ward, R., Basoalto, H., Brooks, J. W., & Attallah, M. M. (2015) · Acta Materialia · doi:10.1016/j.actamat.2015.06.004 · Cited by 1,041
Single track formation in selective laser melting of metal powders
Yadroitsev, I., Gusarov, A., Yadroitsava, I., & Smurov, I. (2010) · Journal of Materials Processing Technology · doi:10.1016/j.jmatprotec.2010.05.010 · Cited by 827
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Mesoscopic simulation model of selective laser melting of stainless steel powder
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Metadata
- Authors
- Khairallah, S. A., Anderson, A. T., Rubenchik, A., & King, W. E.
- Venue
- Acta Materialia
- Publisher
- Elsevier BV
- Published
- 2016-04
- Volume
- 108
- Pages
- 36-45
- ISSN
- 1359-6454 (ISSN-L)
- OpenAlex
- W2279780730
- Cited by
- 2,766
- References
- 22
- FWCI
- 161.43
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Khairallah, S. A., Anderson, A. T., Rubenchik, A., & King, W. E. (2016). Laser powder-bed fusion additive manufacturing: Physics of complex melt flow and formation mechanisms of pores, spatter, and denudation zones. Acta Materialia. https://doi.org/10.1016/j.actamat.2016.02.014
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