Laser Polishing of Laser Powder Bed Fusion AlSi10Mg Parts—Influence of Initial Surface Roughness on Achievable Surface Quality — Oak Academic Publishing
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Laser Polishing of Laser Powder Bed Fusion AlSi10Mg Parts—Influence of Initial Surface Roughness on Achievable Surface Quality
Laser Powder Bed Fusion (LPBF) is an Additive Manufacturing technique, which allows production of highly complex solid metal parts with good mechanical properties, compared to conventionally manufactured parts. Nevertheless, the layer-by-layer fabrication process also offers several disadvantages, including a relatively high surface roughness depending on the shape of the component, its position and orientation during the fabrication process. This paper deals with investigations on the surface roughness reduction capability, and residual surface structures by laser polishing of LPBF AlSi10Mg parts under varying initial surface roughness in order to investigate the influence of the surface behavior and initial surface roughness to the achievable surface quality by laser polishing. Hereto test specimens with varying fabrication orientations regarding to the built platform are printed and further polished. Thereby the initial arithmetic roughness varies between 19.2 μm and 8.0 μm. It could be shown that the achievable surface roughness by laser polishing with continuous and pulsed laser radiation is increasing with rising initial roughness, but the relative roughness reduction is almost constant in the range of 95% - 97.5%. The analyzation of the residual roughness structures shows, that the main roughness differences is found in the middle and long structure wavelength regime, which are directly depending on the initial surface structures of 3D printing.
Kempen, K., Thijs, L., van Humbeeck, J. and Kruth, J.-P. (2012) Mechanical Properties of AlSi10Mg Produced by Selective Laser Melting. Physics Procedia, 39, 439-446. https://doi.org/10.1016/j.phpro.2012.10.059
Mower, T.M. and. Long, M.J. (2016) Mechanical Behavior of Additive Manufactured, Powder-Bed Laser-Fused Materials. Materials Science and Engineering: A, 651, 198-213. https://doi.org/10.1016/j.msea.2015.10.068
Hitzler, L., Janousch, C., Schanz, J., Merkel, M., Mack, F. and Ochsner, A. (2016) Non-Destructive Evaluation of AlSi10Mg Prismatic Samples Generated by Selective Laser Melting: Influence of Manufacturing Conditions. Materials Science & Engi- neering Technology, 47, 564-581. https://doi.org/10.1002/mawe.201600532
Yasa, E. and Kruth, J.-P. (2011) Microstructural Investigation of Selective Laser Melting 316L Stainless Steel Parts Exposed to Laser Re-Melting. Procedia Engineering, 19, 389-395. https://doi.org/10.1016/j.proeng.2011.11.130
van Hooreweder, B., Lietaert, K., Neirinck, B., Lippiatt, N. and Wevers, M. (2017) CoCr F75 Scaffolds Produced by Additive Manufacturing: Influence of Chemical Etching on Powder Removal and Mechanical Performance. Journal of the Mechanical Behavior of Biomedical Materials, 70, 60-67. https://doi.org/10.1016/j.jmbbm.2017.03.017
Hitzler, L., Janousch, C., Schanz, J., Merkel, M., Heine, B., Mack, F., Hall, W. and Ochsner, A. (2017) Direction and Location Dependency of Selective Laser Melted AlSi10Mg Specimens. Journal of Materials Processing Technology, 243, 48-61. https://doi.org/10.1016/j.jmatprotec.2016.11.029
Ch, S.R., Raja, A., Nadig, P., Jayaganthan, R. and. Vasa, N.J. (2019) Influence of Working Environment and Built Orientation on the Tensile Properties of Selective Laser Melted AlSi10Mg alloy. Materials Science and Engineering A, 750, 141-151. https://doi.org/10.1016/j.msea.2019.01.103
Yang, T., Liu, T., Liao, W., MacDonald, E., Wei, H., Chen, X. and Jiang, L. (2019) The Influence of Process Parameters on Vertical Surface Roughness of the AlSi10Mg Parts Fabricated by Selective Laser Melting. Journal of Materials Processing Technology, 266, 26-36. https://doi.org/10.1016/j.jmatprotec.2018.10.015
Calignano, F., Manfredi, D., Ambrosio, E. P., Iuliano, L. and Fino, P. (2013) Influence of Process Parameters on Surface Roughness of Aluminum Parts Produced by DMLS. The International Journal of Advanced Manufacturing Technology, 67, 2743- 2751. https://doi.org/10.1007/s00170-012-4688-9
Dewi, H.S. and Volpp, J. (2020) Impact of Laser Beam Oscillation Strategies on Surface Treatment of Microalloyed Steel. Journal of Laser Applications, 32, Article No. 42006. https://doi.org/10.2351/7.0000196
Yasa, E. and Kruth, J.-P. (2014) Application of Laser Remelting on Selective Laser Melting Parts. Advances in Production Engineering & Management, 6, 259-270
Gebhardt, A., Hotter, J.-S. and Ziebura, D. (2014) Impact of SLM Build Parameters on the Surface Quality. RTejournal—Forum für Rapid Technologie, 11, 1-15.
Nüsser, C. (2018) Laser Micro Polishing of Metals: Process Fundamentals. 3rd Conference on Laser Polishing, Aachen, 12-13 September 2018.
Yadav, M.J., Jinoop, A.N., Danduk, C. and Subbu, S.K. (2017) Laser Shock Processing: Process Physics, Parameters, and Applications. Materials Today: Proceedings, 4, 7921-7930. https://doi.org/10.1016/j.matpr.2017.07.128
Peyre, P., Fabbro, R., Berthe, L. and Dubouchet, C. (1996) Laser Shock Processing of Materials, Physical Processes Involved and Examples of Applications. Journal of Laser Applications, 8, 135-141. https://doi.org/10.2351/1.4745414
Booij, S.M. (2003) Fluid Jet Polishing. Possibilities and Limitations of a New Fabrication Technique. PhD Dissertation, Technical University of Delft, Delft.
Manfredi, D., Calignano, F., Krishnan, M., Canali, R., Ambrosio, E.P., Biamino, S., Ugues, D., Pavese, M. and Fino, P. (2014) Additive Manufacturing of Al Alloys and Aluminium Matrix Composites (AMCs). IntechOpen, London, 2. https://doi.org/10.5772/58534
Campanelli, S.L., Casalino, G., Contuzzi, N. and Ludovico, A.D. (2013) Taguchi Optimization of the Surface Finish Obtained by Laser Ablation on Selective Laser Molten Steel Parts. Procedia CIRP, 12, 462-467. https://doi.org/10.1016/j.procir.2013.09.079
Li, Y., Wu, Y., Zhou, L. and Fujimoto, M. (2014) Vibration-Assisted Dry Polishing of Fused Silica Using a Fixed-Abrasive Polisher. International Journal of Machine Tools and Manufacture, 77, 93-10. https://doi.org/10.1016/j.ijmachtools.2013.10.005
Lyczkowska, E., Szymczyk, P., Dybala, B. and Chlebus, E. (2014) Chemical Polishing of Scaffolds Made of Ti-6Al-7Nb Alloy by Additive Manufacturing. Archives of Civil and Mechanical Engineering, 14, 586-594. https://doi.org/10.1016/j.acme.2014.03.001
Bordatchev, E.V., Hafiz, A.M.K. and Tutunea-Fatan, O.R. (2014) Performance of Laser Polishing in Finishing of Metallic Surfaces. The International Journal of Advanced Manufacturing Technology, 73, 35-52. https://doi.org/10.1007/s00170-014-5761-3
Ross, I. (2014) Prospects of Laser Polishing for Small and Complexly Shaped Parts. High Speed/High Precision Laser Microfabrication, Aachen, 14 June 2014. https://www.swissphotonics.net/libraries.files/epmt_2014_Ross.pdf
Willenborg, E (2005) Polieren von Werkzeugstahlen mit Laserstrahlung. PhD RWTH Aachen, Aachen.
Burzic, B., Hofele, M., Mürdter, S. and Riegel, H. (2016) Laser Polishing of Ground Aluminum Surfaces with High Energy Continuous Wave Laser. Journal of Laser Applications, 29, Article ID: 011701. https://doi.org/10.2351/1.4966923
Temmler, A., Liu, D., Luo, J. and Poprawe, R. (2020) Influence of Pulse Duration and Pulse Frequency on Micro-Roughness for Laser Micro Polishing (LμP) of Stainless Steel AISI 410. Applied Surface Science, 510, Article ID: 145272. https://doi.org/10.1016/j.apsusc.2020.145272
Yasa, E., Deckers, J. and Kruth, J.-P. (2011) The Investigation of the Influence of Laser Remelting on Density, Surface Quality and Microstructure of Selective Laser Melting Parts. Rapid Prototyping Journal, 17, 312-327. https://doi.org/10.1108/13552541111156450
Gora, W.S., et al. (2016) Enhancing Surface Finish of Additively Manufactured Ti-Tanium and Cobalt Chrome Elements Using Laser Based Finishing. Physics Procedia, 83, 258-263. https://doi.org/10.1016/j.phpro.2016.08.021
Yung, K.C., Xiao, T.Y., Choy, H.S., Wang, W.J. and Cai, Z.X. (2018) Laser Polishing of Additive Manufactured CoCr Alloy Components with Complex Surface Geometry. Journal of Materials Processing Technology, 262, 53-64. https://doi.org/10.1016/j.jmatprotec.2018.06.019
Richter, B., Blanke, N., Werner, C., Vollertsen, F. and Pfefferkorn, F.E. (2019) Effect of Initial Surface Features on Laser Polishing of Co-Cr-Mo Alloy Made by Powder-Bed Fusion. JOM, 71, 912-919. https://doi.org/10.1007/s11837-018-3216-2
Kumstel, J. (2015) Polieren von SLM-Bauteilen mit kontinuierlicher Laserstrahlung. In: Witt, G., Wegner, A. and Sehrt, J., Eds., Neue Entwicklungen in der Additiven Fertigung, Springer, Berlin, 143-157. https://doi.org/10.1007/978-3-662-48473-9_10
Fang, Z., Lu, L., Chen, L. and Guan, Y. (2018) Laser Polishing of Additive Manufactured Superalloy. Procedia CIRP, 71, 150-154. https://doi.org/10.1016/j.procir.2018.05.088
Dadbakhsh, S., Hao, L. and Kong, C.Y. (2010) Surface Finish Improvement of LMD Samples Using Laser Polishing. Virtual and Physical Prototyping, 5, 215-221. https://doi.org/10.1080/17452759.2010.528180
Lamikiz, A., Sánchez, J.A., López de Lacalle, L.N. and Arana, J.L. (2007) Laser Polishing of Parts Built Up by Selective Laser Sintering. International Journal of Machine Tools and Manufacture, 47, 2040-2050. https://doi.org/10.1016/j.ijmachtools.2007.01.013
Ukar, E., Lamikiz, A., Lacalle, L.L.D., Pozo, D.D., Liebana, F. and Sanchez, A. (2010) Laser Polishing Parameter Optimisation on Selective Laser Sintered Parts. International Journal of Machining and Machinability of Materials, 8, 417. https://doi.org/10.1504/IJMMM.2010.036148
Breidenstein, B., Brenne, F., Wu, L., Niendorf, T. and Denkena, B. (2018) Effect of Post-Process Machining on Surface Properties of Additively Manufactured H13 Tool Steel. HTM Journal of Heat Treatment and Materials, 73, 173-186. https://doi.org/10.3139/105.110359
Ma, C.P., Guan, Y.C. and Zhou, W. (2017) Laser Polishing of Additive Manufactured Ti Alloys. Optics and Lasers in Engineering, 93, 171-177. https://doi.org/10.1016/j.optlaseng.2017.02.005
Li, Y.-H., Wang, B., Ma, C.-P., Fang, Z.-H., Chen, L.-F., Guan, Y.-C. and Yang, S.-F. (2019) Material Characterization, Thermal Analysis, and Mechanical Performance of a Laser-Polished Ti Alloy Prepared by Selective Laser Melting. Metals, 9, 112. https://doi.org/10.3390/met9020112
Schanz, J., et al. (2017) Metallurgical Investigations of Laser Remelted Additively Manufactured AlSi10Mg Parts. Materialwissenschaft und Werkstofftechnik, 48, 463- 476. https://doi.org/10.1002/mawe.201700039
Schanz, J., Hofele, M., Hitzler, L., Merkel, M. and Riegel, H. (2016) Laser Polishing of Additive Manufactured AlSi10Mg Parts with an Oscillating Laser Beam. In: Ochsner, A. and Altenbach, Eds., Machining, Joining and Modifications of Advanced Materials, Advanced Structured Materials, Springer, Singapore.
Markovic, V., et al. (2016) Investigation of the Laser Polishing Influence on the Parts Built by SLS. Solid State Phenomena, 251, 8-13. https://doi.org/10.4028/www.scientific.net/SSP.251.8
Hofele, M., Schanz, J., Roth, A., Harrison, D., Silva, A. and Riegel, H. (2020) Parameter Study of Continuous and Pulsed Wave Laser Polishing of Additive Manufactured Aluminum Parts.