Abstract
Laser powder bed fusion (LPBF) process is used for fabricating complex geometries of metallic parts ranging from macro to micro size. Fabrication of a part with various curvature angles is always a great challenge due to variation in the deposition of material at the curvature. The process parameters of contour exposure of the printing part play an important role in geometrical accuracy. Hence, In this study, the contour of various curvatures (\(30^\circ\), \(60^\circ\), \(90^\circ\), & \(120^\circ\)) is analyzed for various laser power and scanning speed. It is found that track width at the curvature is increased from 17 % to 160 % on decreasing the angle between tracks from \(120^\circ\) to \(30^\circ\) compared to the width at the track. The variation in width at curvature and track is occurred due to an increase in supplied energy because of deceleration and acceleration of the laser source at the curvature. Further, the width at the curvature gets wider during the subsequent layer deposition and increases with linear energy density due to remelting and spreading at the curvatures.
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All the experimental data regarding this work is included in the manuscript. So, no further data is necessarily needed.
References
DebRoy T, Wei HL, Zuback JS, Mukherjee T, Elmer JW, Milewski JO, Beese AM, Wilson-Heid A, De A, Zhang W (2018) Additive manufacturing of metallic components - process, structure and properties. Progress Mater Sci 92:112–224. https://doi.org/10.1016/j.pmatsci.2017.10.001
Cooke S, Ahmadi K, Willerth S, Herring R (2020) Metal additive manufacturing: technology, metallurgy and modelling. J Manuf Process 57(August):978–1003. https://doi.org/10.1016/j.jmapro.2020.07.025
Mekhiel S, Koshy P, Elbestawi MA (2021) Additive texturing of metallic surfaces for wetting control. Addit Manuf 37(August):101631. https://doi.org/10.1016/j.addma.2020.101631
Ho JY, Wong KK, Leong KC (2016) Saturated pool boiling of FC-72 from enhanced surfaces produced by selective laser melting. Int J Heat Mass Transfer 99:107–121. https://doi.org/10.1016/j.ijheatmasstransfer.2016.03.073
Gurrappa I (2003) Characterization of titanium alloy Ti-6Al-4V for chemical, marine and industrial applications. Mater Charact 51(2–3):131–139. https://doi.org/10.1016/j.matchar.2003.10.006
Yadroitsev I, Gusarov A, Yadroitsava I, Smurov I (2010) Single track formation in selective laser melting of metal powders. J Mater Process Technol 210(12):1624–1631. https://doi.org/10.1016/j.jmatprotec.2010.05.010
Yadroitsev I, Krakhmalev P, Yadroitsava I, Johansson S, Smurov I (2013) Energy input effect on morphology and microstructure of selective laser melting single track from metallic powder. J Mater Process Technol 213(4):606–613. https://doi.org/10.1016/j.jmatprotec.2012.11.014
Aversa A, Moshiri M, Librera E, Hadi M, Marchese G, Manfredi D, Lorusso M, Calignano F, Biamino S, Lombardi M, Pavese M (2018) Single scan track analyses on aluminium based powders. J Mater Process Technol 255(September 2017):17–25. https://doi.org/10.1016/j.jmatprotec.2017.11.055
Gu D, Hagedorn YC, Meiners W, Meng G, Batista RJS, Wissenbach K, Poprawe R (2012) Densification behavior, microstructure evolution, and wear performance of selective laser melting processed commercially pure titanium. Acta Materialia 60(9):3849–3860. https://doi.org/10.1016/j.actamat.2012.04.006
Ali H, Ghadbeigi H, Mumtaz K (2018) Effect of scanning strategies on residual stress and mechanical properties of selective laser melted Ti6Al4V. Mater Sci Eng A 712(November 2017):175–187. https://doi.org/10.1016/j.msea.2017.11.103
Singla AK, Banerjee M, Sharma A, Singh J, Bansal A, Gupta MK, Khanna N, Shahi AS, Goyal DK (2021) Selective laser melting of Ti6Al4V alloy: process parameters, defects and post-treatments. J Manuf Process 64(January):161–187. https://doi.org/10.1016/j.jmapro.2021.01.009
Liu Y, Zhang J, Pang Z, Wu W (2018) Investigation into the influence of laser energy input on selective laser melted thin-walled parts by response surface method. Optics Lasers Eng 103(August 2017):34–45. https://doi.org/10.1016/j.optlaseng.2017.11.011
Simson D, Subbu SK (2022) Investigation of build strategies for microfeatures fabrication using laser powder bed fusion. J Manuf Process 79(April):990–1002. https://doi.org/10.1016/j.jmapro.2022.05.042
Assuncao E, Williams S, Yapp D (2012) Interaction time and beam diameter effects on the conduction mode limit. Optics Lasers Eng 50(6):823–828. https://doi.org/10.1016/j.optlaseng.2012.02.001
Huang J, Qin Q, Wang J, Fang H (2018) Two dimensional laser galvanometer scanning technology for additive manufacturing. Int J Mater Mech Manuf 6(5):332–336. https://doi.org/10.18178/ijmmm.2018.6.5.402
Nayak SK, Mishra SK, Paul CP, Jinoop AN, Bindra KS (2020) Effect of energy density on laser powder bed fusion built single tracks and thin wall structures with 100 μm preplaced powder layer thickness. Optics Laser Technol 125(December 2019):106016. https://doi.org/10.1016/j.optlastec.2019.106016
Yeung H, Lane B, Fox J (2019) Part geometry and conduction-based laser power control for powder bed fusion additive manufacturing. Addit Manuf 30(February):100844. https://doi.org/10.1016/j.addma.2019.100844
EOS GmbH (2017): EOS Titanium Ti64 - Material data sheet. https://www.eos.info/03_system-related-assets/material-related-contents/metal-materials-and-examples/metal-material-datasheet/titan/ti64/material_datasheet_eos_titanium_ti64_grade5_en_web.pdf. Accessed 18 Nov 2022
Acknowledgements
The authors are thankful to Central Facility for Materials and Manufacturing Engineering (CFMM) for the support received in using the laser powder bed fusion machine facility at IIT Palakkad. The authors would like to thank the Central Instrumentation Facility (CIF) for the support during the use of SEM.
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Simson, D., Subbu, S.K. Study on track width of various curvature angles in laser powder bed fusion deposition. Prog Addit Manuf 9, 231–236 (2024). https://doi.org/10.1007/s40964-023-00444-5
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DOI: https://doi.org/10.1007/s40964-023-00444-5