Abstract
Common microscopy approaches are considered as destructive technologies for porosity characterization in metallic parts for various engineering components. They are not only time consuming, but also causes wastage of materials due to the need of fabricating numerous batches of specimens just for such characterization. However, X-ray computed tomography has recently emerged as a viable technique to evaluate the porosity content in metallic components without the need of physically damaging them on purpose. Therefore, in this study, X-ray computed tomography and conventional 3D optical microscopy cross-section analysis approaches were used to compare the porosity profile obtained in 316L stainless steel additively manufactured using selective laser melting. both X-ray computed tomography and optical microscopy results both consistently show high densification (>99%) and low porosity (<0.7%) levels, suggesting optimum processing parameters were selected for the selective laser melting process. Similarly, the results of pore size, morphology, and distribution also compare well between both techniques. Overall, X-ray computed tomography is proven to be an effective non-destructive technique to assess porosity and defects in additively manufactured parts.
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References
Kumaresan R, Samykano M, Kadirgama K, Ramasamy D, Keng NW, Pandey AK (2021) 3D printing technology for thermal application: a brief review. J Adv Res Fluid Mech Therm Sci 83:84–97
Salleh ZM, Osman K, Marian MF, Hassan NNM, Madon RH, Samiran NA, Rashid RA, Ishak IA, Darlis N (2021) Rapid prototyping 3D model for PIV: application in human trachea model flow analysis. J Adv Res Fluid Mech Therm Sci 79:65–73
Bandyopadhyay A, Zhang Y, Bose S (2020) Recent developments in metal additive manufacturing. Curr Opin Chem Eng 28:96–104
Everton SK, Hirsch M, Stravroulakis P, Leach RK, Clare AT (2016) Review of in-situ process monitoring and in-situ metrology for metal additive manufacturing. Mater Des 95:431–445
Mani M, Lane BM, Donmez MA, Feng SC, Moylan SP (2017) A review on measurement science needs for real-time control of additive manufacturing metal powder bed fusion processes. Int J Prod Res 55:1400–1418
Lewandowski JJ, Seifi M (2016) Metal additive manufacturing: a review of mechanical properties. Annu Rev Mater Res 46:151–186
Sames WJ, List FA, Pannala S, Dehoff RR, Babu SS (2016) The metallurgy and processing science of metal additive manufacturing. Int Mater Rev 61:1–46
Cherry JA, Davies HM, Mehmood S, Lavery NP, Brown SGR, Sienz J (2014) Investigation into the effect of process parameters on microstructural and physical properties of 316L stainless steel parts by selective laser melting. Int J Adv Manuf Technol 76:869–879
Yusuf SM, Chen Y, Boardman R, Yang S, Gao N (2017) Investigation on porosity and microhardness of 316L stainless steel fabricated by selective laser melting. Metals (Basel) 7
Seifi M, Salem A, Beuth J, Harrysson O, Lewandowski JJ (2016) Overview of materials qualification needs for metal additive manufacturing. Jom 68:747–764
Wits WW, Carmignato S, Zanini F, Vaneker THJ (2016) Porosity testing methods for the quality assessment of selective laser melted parts. CIRP Ann Manuf Technol 65:201–204
Ismon M, Jamalludin MD, Bujang IZ, Azmir NA, Asmawi R, Sies MF, Roslan MN, Ibrahim Z (2020) Pitting hole evaluation by active infrared thermography in stainless steel 304. J Adv Res Fluid Mech Therm Sci 68:114–124
Wong TL, Ahmad UK, Tharmalingam S (2016) Non-destructive blended fibre analysis from forensic perspective. J Adv Res Appl Sci Eng Technol 2:44–56
Sames WJJ, Medina F, Peter WHH, Babu SSS, Dehoff RRR (2014) Effect of process control and powder quality on IN 718 produced using electron beam melting. In: 8th international symposium on superalloy 718 and derivative. Wiley-Blackwell, Pittsburgh, pp 409–423
King WE, Barth HD, Castillo VM, Gallegos GF, Gibbs JW, Hahn DE, Kamath C, Rubenchik AM (2014) Observation of keyhole-mode laser melting in laser powder-bed fusion additive manufacturing. J Mater Process Technol 214:2915–2925
Körner C, Bauereiß A, Attar E (2013) Fundamental consolidation mechanisms during selective beam melting of powders. Model Simul Mater Sci Eng 21:1–18
Ziółkowski G, Chlebus E, Szymczyk P, Kurzac J (2014) Application of X-ray CT method for discontinuity and porosity detection in 316L stainless steel parts produced with SLM technology. Arch Civ Mech Eng 14:608–614
Cai X, Malcolm AA, Wong BS, Fan Z (2015) Measurement and characterization of porosity in aluminium selective laser melting parts using X-ray CT. Virtual Phys Prototyp 10:195–206
Acknowledgements
The XCT scan was supported by μ-ray Imaging Centre, University of Southampton, UK under EPSRC grant EP-H01506X. The authors would also like to acknowledge grant R.K130000.7343.4B472 by Takasago Thermal Engineering Co. Ltd. for supporting this study.
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Mohd Yusuf, S., Che Sidik, N.A., Gao, N. (2023). Using X-Ray Computed Tomography for Effective Porosity Characterisation in Additively Manufactured Metallic Parts. In: Ismail, M.Y., Mohd Sani, M.S., Kumarasamy, S., Hamidi, M.A., Shaari, M.S. (eds) Technological Advancement in Mechanical and Automotive Engineering. ICMER 2021. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-19-1457-7_66
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DOI: https://doi.org/10.1007/978-981-19-1457-7_66
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