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Numerical Study of the Flow Field and Spatter Particles in Laser-based Powder Bed Fusion Manufacturing

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Abstract

Laser-based powder bed fusion (L-PBF) is an additive manufacturing (AM) technology that uses a high-energy–density laser to scan through a powder bed and completely melts the metal powder. The environment inside the printer chamber, including the flow field of the shielding gas and the spatter particles induced by laser–powder interactions, is essential for product quality. For the first time, this work built a full-size model of printer chamber, and numerically investigated the interaction between the shielding argon flow and the laser induced spatter particles with considering laser temperature. A full-size geometric model of a commercial L-PBF printer with a Gaussian heat source was constructed, as well as a movable particle-release source model for particle injection. The distribution of the argon flow field, the temperature field, and the trajectory and deposition of spatter particles, particularly above the workbench during the L-PBF process were quantitatively analyzed. The results show that the gas flow within 30 mm above the workbench is uniform, and in the upper region of the printer chamber, the flow field is disorderly. The laser can only induce high temperature and upward gas flow in a small region close to the workbench (the height less than 1.6 mm), and the laser induced velocity disturbance in rest regions of the L-PBF printer is negligible. Particles injected towards the outlet (ID4) are mostly blown into the outlet, and in the other four injection directions, more than 90% of spatter particles are deposited inside the printer chamber, especially more than 50% deposited on the workbench. Increasing the laser power (from 100 to 200 W) has little effect on particle deposition on the workbench. Results will be helpful for improving the L-PBF product quality.

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References

  1. Beyer, C. (2014). Strategic implications of current trends in additive manufacturing. Journal of Manufacturing Science and Engineering ASME, 136(6), 064701

    Article  Google Scholar 

  2. Lee, H., Lim, C. H. J., Low, M. J., Tham, N., Murukeshan, V. M., & Kim, Y. J. (2017). Lasers in additive manufacturing: A Review. International Journal of Precision Engineering and Manufacturing-Green Technology, 4(3), 307–322

    Article  Google Scholar 

  3. Tootooni, M. S., Dsouza, A., Donovan, R., Rao, P. K., Kong, Z. Y., & Borgesen, P. (2017). Classifying the dimensional variation in additive manufactured parts from laser-scanned three-dimensional point cloud data using machine learning approaches. Journal of Manufacturing Science and Engineering ASME, 139(9), 091005

    Article  Google Scholar 

  4. Liu, C., Law, A. C. C., Roberson, D., & Kong, Z. Y. (2019). Image analysis-based closed loop quality control for additive manufacturing with fused filament fabrication. Journal of Manufacturing Systems, 51, 75–86

    Article  Google Scholar 

  5. Buchbinder, D., Schleifenbaum, H., Heidrich, S., Meiners, W., & Bültmann, J. J. P. P. (2011). High power selective laser melting (HP SLM) of aluminum parts, 6th International WLT Conference on Lasers in Manufacturing (LiM). Physics Procedia12, 271-278

  6. Yeo, I., Bae, S., Amanov, A., & Jeong, S. (2020). Effect of laser shock peening on properties of heat-treated Ti–6Al–4V manufactured by laser powder bed fusion. International Journal of Precision Engineering and Manufacturing-Green Technology, 1-14

  7. Pinto, M. A., Cheung, N., Ierardi, M. C. F., & Garcia, A. (2003). Microstructural and hardness investigation of an aluminum–copper alloy processed by laser surface melting. Materials Characterization, 50(2–3), 249–253

    Article  Google Scholar 

  8. Wang, W. C., & Chang, C. Y. (2017). Flow analysis of the laminated manufacturing system with laser sintering of metal powder Part I: flow uniformity inside the working chamber. The International Journal of Advanced Manufacturing Technology, 92(1–4), 1299–1314

    Article  Google Scholar 

  9. Ladewig, A., Schlick, G., Fisser, M., Schulze, Y., & Glatzel, U. (2016). Influence of the shielding gas flow on the removal of process by-products in the selective laser melting process. Additive Manufacturing, 10, 1–9

    Article  Google Scholar 

  10. Ferrar, A., Mullen, L., Jones, E., Stamp, R., & Sutcliffe, C. J. (2012). Gas flow effects on selective laser melting (SLM) manufacturing performance. Journal of Material Processing Technology, 212(2), 355–364

    Article  Google Scholar 

  11. Kong, C. J., Tuck, C. J., Ashcroft, I. A., Wildman, R. D., & Hague, R. (2011). High density Ti6Al4V vie SLM processing: microstructure and mechanical properties. International Solid Freeform Fabrication Symposium., 36, 475–483

    Google Scholar 

  12. Ali, U., Esmaeilizadeh, R., Ahmed, F., Sarker, D., Muhammad, W., Keshavarzkermani, A., Mahmoodkhani, Y., Marzbanrad, E., & Toyserkani, E. (2019). Identification and characterization of spatter particles and their effect on surface roughness, density and mechanical response of 17–4 PH stainless steel laser powder-bed fusion parts. Materials Science and Engineering A, 756, 98–107

    Article  Google Scholar 

  13. Aeschliman, D. B., Bajic, S. J., Baldwin, D. P., & Houk, R. S. (2003). High-speed digital photographic study of an inductively coupled plasma during laser ablation: comparison of dried solution aerosols from a microconcentric nebulizer and solid particles from laser ablation. Journal of Analytical Atomic Spectrometry, 18(9), 1008–1014

    Article  Google Scholar 

  14. Peng, T., & Chen, C. (2018). Influence of energy density on energy demand and porosity of 316L stainless steel fabricated by selective laser melting. International Journal of Precision Engineering and Manufacturing-Green Technology., 5(1), 55–62

    Article  Google Scholar 

  15. Matthews, M. J., Guss, G., Khairallah, S. A., Rubenchik, A. M., Depond, P. J., & King, W. E. (2016). Denudation of metal powder layers in laser powder bed fusion processes. Acta Materialia, 114, 33–42

    Article  Google Scholar 

  16. Zhang, X. B., Cheng, B., & Tuffile, C. (2020). Simulation study of the spatter removal process and optimization design of gas flow system in laser powder bed fusion. Advanced Manufacturing, 32, 101049

    Google Scholar 

  17. Ansys Fluent 14.0, Theory Guide, Ansys Inc., 2011

  18. Ansys Icepak 14.0, User's Guide, Ansys Inc., 2011

  19. Chen, L. W., Li, H., Liu, S., Shen, S. N., Zhang, T., Huang, Y. C., Zhang, G. Q., Zhang, Y. F., He, B., & Yang, C. K. (2019). Simulation of surface deformation control during selective laser melting of AlSi10Mg powder using an external magnetic field. AIP Advances, 9(4), 045012

    Article  Google Scholar 

  20. Zhang, T., Li, H., Liu, S., Shen, S. N., Xie, H. M., Shi, W. X., Zhang, G. Q., Shen, B. N., Chen, L. W., Xiao, B., & Wei, M. M. (2019). Evolution of molten pool during selective laser melting of Ti-6Al-4V. Journal of Physics. D. Applied Physics, 52(5), 055302

    Article  Google Scholar 

  21. Ning, J. Q., Sievers, D. E., Garmestani, H., & Liang, S. Y. (2020). Analytical modeling of in-process temperature in powder feed metal additive manufacturing considering heat transfer boundary condition. International Journal of Precision Engineering and Manufacturing-Green Technology, 7, 585–593

    Article  Google Scholar 

  22. Dal, K., & Shaw, L. (2005). Finite element analysis of the effect of volume shrinkage during laser densification. Acta Materialia, 53(18), 4743–4754

    Article  Google Scholar 

  23. Guha, A. (2008). Transport and deposition of particles in turbulent and laminar flow. Annual Review of Fluid Mechanics, 40, 311–341

    Article  MathSciNet  Google Scholar 

  24. Anwar, A. B., & Pham, Q. C. (2016). Effect of inert gas flow velocity and unidirectional scanning on the formation and accumulation of spattered powder during selective laser melting. In Proc. 2nd Int. Conf. Prog. Addit. Manuf.(Pro-AM 2016).

  25. Khorasani, I., Gibson, U. S., & Awan, A. (2019). Ghaderi, The effect of SLM process parameters on density, hardness, tensile strength and surface quality of Ti-6Al-4V. Additive Manufacturing, 25, 176–186

    Article  Google Scholar 

  26. Fu, C. H., & Guo, Y. B. (2014). Three-dimensional temperature gradient mechanism in selective laser melting of Ti-6Al-4V. Journal of Manufacturing Science and Engineering ASME, 136(6), 061004

    Article  Google Scholar 

  27. Rai, R., Elmer, J. W., Palmer, T. A., & Debroy, T. (2007). Heat transfer and fluid flow during keyhole mode laser welding of tantalum, Ti–6Al–4V, 304L stainless steel and vanadium. Journal of Physics. D. Applied Physics, 40(18), 5753–5766

    Article  Google Scholar 

  28. Deng, J., Zhong, H. P., Gong, Y. C., Gong, X. H., & Li, L. G. (2018). Studies on injection and mixing characteristics of high pressure hydrogen and oxygen jet in argon atmosphere. Fuel, 226, 454–461

    Article  Google Scholar 

  29. Barron, R. F., & Nellis, G. F. (2017). Cryogenic heat transfer. CRC press

  30. Jin, K., Vanka, S. P., & Thomas, B. G. (2018). Large eddy simulations of electromagnetic braking effects on argon bubble transport and capture in a steel continuous casting mold. Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, 49(3), 1360–1377

    Article  Google Scholar 

  31. Gong, H., Rafi, K., Starr, T., & Stucker, B. (2013). The effects of processing parameters on defect regularity in Ti-6Al-4V parts fabricated by selective laser melting and electron beam melting. In 24th annual international solid freeform fabrication symposium—an additive manufacturing conference, Austin, TX (pp. 424-439)

  32. Heeling, T., Gerstgrasser, M., & Wegener, K. (2017). Investigation of selective laser melting spatter characteristics for single-and multi-beam strategies using high speed imaging. In Lasers in Manufacturing Conference (LiM 2017). Wissenschaftliche Gesellschaft Lasertechnik eV (WLT)

Download references

Acknowledgement

This study was supported by the National Key Research and Development Program of China [Grant number 2017YFB1103900], the Key Research and Development Program of Sichuan Province, China [Grant number 2020YFSY0054] and the Key Research and Development Program of Hubei Province, China [Grant number 2020BAB045].

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Correspondence to Hui Li or Sheng Liu.

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Wang, J., Zhu, Y., Li, H. et al. Numerical Study of the Flow Field and Spatter Particles in Laser-based Powder Bed Fusion Manufacturing. Int. J. of Precis. Eng. and Manuf.-Green Tech. 9, 1009–1020 (2022). https://doi.org/10.1007/s40684-021-00357-0

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