Laser Surface Polishing of Ti6Al4V Titanium Alloy in Air, Nitrogen and Argon Environments

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This paper presents the laser surface polishing of titanium alloy (Ti6Al4V) by using a nanosecond pulse laser. Air, nitrogen and argon were employed as a shielding gas in this study, where the areal roughness (Sa) of laser-polished surface was measured and compared. The results showed that argon was the suitable assist gas for improving the metal surface without causing the oxidation. The effect of laser pulse repetition rate and scan speed on the surface roughness was also investigated in this study. The use of high repetition rate together with slow scan speed was able to reduce the surface roughness of titanium alloy. The roughness was found to be reduced by 47% when the pulse repetition rate of 500 kHz and scan speed of 50 mm/s were applied.

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15-20

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August 2021

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© 2021 Trans Tech Publications Ltd. All Rights Reserved

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[1] E.V. Bordatchev, A.M.K. Hafiz, O.R. Tutunea-Fatan, Performance of laser polishing in finishing of metallic surfaces, The International Journal of Advanced Manufacturing Technology 73 (2014) 35-52.

DOI: 10.1007/s00170-014-5761-3

Google Scholar

[2] C.S. Chang, C.K. Chung, J.F. Lin, Surface quality, microstructure, mechanical properties and tribological results of the SKD 61 tool steel with prior heat treatment affected by the deposited energy of continuous wave laser micro-polishing, Journal of Materials Processing Technology 234 (2016) 177-194.

DOI: 10.1016/j.jmatprotec.2016.03.024

Google Scholar

[3] B. Meylan, I. Calderon, Q.T. Le, K. Wasmer, Investigations of surface defects during laser polishing of tool steel, Procedia CIRP 94 (2020) 942-946.

DOI: 10.1016/j.procir.2020.09.092

Google Scholar

[4] J. Solheid, H.J. Seifert, W. Pfleging, Laser surface modification and polishing of additive manufactured metallic parts, Procedia CIRP 74 (2018) 280-284.

DOI: 10.1016/j.procir.2018.08.111

Google Scholar

[5] C. Liang, Y. Hu, N. Liu, X. Zou, H. Wang, X. Zhang, Y. Fu, J. Hu, Laser Polishing of Ti6Al4V Fabricated by Selective Laser Melting, Metals 10 (2020) 191.

DOI: 10.3390/met10020191

Google Scholar

[6] D. Bhaduri, P. Penchev, A. Batal, S. Dimov, S.L. Soo, S. Sten, U. Harrysson, Z. Zhang, H. Dong, Laser polishing of 3D printed mesoscale components, Applied Surface Science 405 (2017) 29-46.

DOI: 10.1016/j.apsusc.2017.01.211

Google Scholar

[7] L. Giorleo, E.Ceretti, C. Giardini, Ti surface laser polishing: effect of laser path and assist gas, Procedia CIRP 33 (2015) 446-451.

DOI: 10.1016/j.procir.2015.06.102

Google Scholar

[8] P. Jaritngam, V. Tangwarodomnukun, H. Qi, C. Dumkum, Surface and subsurface characteristics of laser polished Ti6Al4V titanium alloy, Optics & Laser Technology 126 (2020) 106102.

DOI: 10.1016/j.optlastec.2020.106102

Google Scholar

[9] H.Z. Zhang, T. Huang, Z. Liu X. Zhang, J.L. Lu, R.S. Xiao, High, fluence nanosecond laser machining of SiCp/AA2024 composite with high pressure assistant gas, Journal of Manufacturing Processes 31 (2018) 560-567.

DOI: 10.1016/j.jmapro.2017.12.020

Google Scholar

[10] X. Sedao, M. Lenci, A. Rudenko, N. Faure, A. Pascale-Hamri, J.P. Colombier, C. Mauclair, Influence of pulse repetition rate on morphology and material removal rate of ultrafast laser ablated metallic surfaces, Optics and Lasers in Engineering 116 (2019) 68-74.

DOI: 10.1016/j.optlaseng.2018.12.009

Google Scholar