Application of X-ray CT method for discontinuity and porosity detection in 316L stainless steel parts produced with SLM technology

• Autorzy: Ziółkowski G. , Chlebus E. , Szymczyk P. , Kurzac J.

Identyfikatory

DOI

10.1016/j.acme.2014.02.003

• Języki publikacji: EN

Abstrakty

EN

Industrial tomography (XCT) is a nondestructive test method that provides information about spatial distribution of X-ray absorption in the analyzed structures. The aim of this paper was to examine the possibility and accuracy of application of XCT method for discontinuity and porosity detection in parts made of 316L stainless steel powder produced by Selective Laser Melting technology. Analysis conducted on three produced test samples showed that the application of XCT as a method of quality control of specimens produced with an additive manufacturing technology offers a wide range of possibilities to detect porosity within materials. Parameters such as the amount of porosity, pore size and pore shape are presented. Accuracy of XCT method strongly depends on the size of the samples analyzed, but the possibility of obtaining information in 3D nondestructively shows considerable advantages of XCT method over traditional metallographic cross-sectional analysis.

Słowa kluczowe

EN

computed tomography; selective laser melting; 316L stainless steel; porosity detection

PL

tomografia komputerowa; stal nierdzewna 316L; topienie laserowe

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2014
• Tom: Vol. 14, no. 4
• Strony: 608--614
• Opis fizyczny: Bibliogr. 13 poz., rys., tab., wykr.

Twórcy

autor

Ziółkowski G.

• Wroclaw University of Technology, Centre for Advanced Manufacturing Technologies/Fraunhofer Project Center (CAMT/FPC), Lukasiewicza 5, 50-371 Wroclaw, Poland

autor

Chlebus E.

• Wroclaw University of Technology, Centre for Advanced Manufacturing Technologies/Fraunhofer Project Center (CAMT/FPC), Lukasiewicza 5, 50-371 Wroclaw, Poland

autor

Szymczyk P.

• Wroclaw University of Technology, Centre for Advanced Manufacturing Technologies/Fraunhofer Project Center (CAMT/FPC), Lukasiewicza 5, 50-371 Wroclaw, Poland

autor

Kurzac J.

• Wroclaw University of Technology, Centre for Advanced Manufacturing Technologies/Fraunhofer Project Center (CAMT/FPC), Lukasiewicza 5, 50-371 Wroclaw, Poland

Bibliografia

• [1] S. Dadbakhsh, L. Hao, N. Sewell, Effect of selective laser melting layout on the quality of stainless steel parts, Rapid Prototyping Journal 18 (3) (2012) 241–249.
• [2] T. Kurzynowski, E. Chlebus, B. Kuznicka, J. Reiner, Parameters in selective laser melting for processing metallic powders, Proceedings of SPIE – The International Society for Optical Engineering 8239 (2012), article number 23914.
• [3] J.P. Kruth, M. Badrossamay, E. Yasa, J. Deckers, L. Thijs, J. Van Humbeeck, Part and material properties in selective laser melting of metals, in: 16th International Symposium on Electromachining (ISEM XVI), 1 November, Shanghai China, 2009.
• [4] E. Chlebus, B. Kuznicka, T. Kurzynowski, B. Dybala, Microstructure and mechanical behavior of Ti—6Al—7Nb alloy produced by selective laser melting, Materials Charac-terization 6 2 (2011) 488–495.
• [5] J. Kastner, B. Planck, G. Requena, Non-destructive charac-terization of polymers and Al alloys by polychromatic cone-beam phase contrast tomography, Materials Characterization 64 (2012) 79–97.
• [6] L. Jiang, N. Chawla, M. Pacheco, V. Noveski, Three-dimensional, (3D) micro structural characterization and quantification of reflow porosity in Sn-rich alloy/copper joints by X-ray tomography, Materials Characterization 62 (2011) 970–975.
• [7] S. Vasic, B. Grobéty, J. Kuebler, L. Baumgartner, XRCT characterization of Ti particles inside porous Al203, Materials Characterization 61 (2010) 653–660.
• [8] P. Li, P.D. Lee, D.M. Maijer, T.C. Lindley, Quantification of the interaction within defect populations on fatigue behaviour in an aluminum alloy, Acta Materialia 57 (2009) 3539–3548.
• [9] D. Wildenschild, A.P. Sheppard, X-ray imaging and analysis techniques for quantifying pore-scale structure and processes in subsurface porous medium systems, Advances in Water Resources 51 (2013) 217–246.
• [10] F. Léonard, S. Tammas-Wiliams, P.B. Prangnell, I. Todd. P.J. Withers. Assessment by X-ray CT of the effects of geometry and build direction on defects in titanium ALM parts. http:// www.ndt.net/article/ctc2012/papers/91.pdf.
• [11] A.B. Spierings, M. Schneider, R. Eggenberger, Comparison of density measurement techniques for additive manufactured metallic parts, Rapid Prototyping Journal 17 (5) (2011) 380–386.
• [12] Kerckhofs, G. Schrooten, Validation of X-ray microfocus computed tomography as an imaging tool for porous structures, Review of Scientific Instruments 79 (2008) 013711.
• [13] F. Rezanezhad, W.L. Quinton, J.S. Price, D. Elrick, T.R. Elliot, R. J. Heck, Examining the effect of pore size distribution and shape on flow through unsaturated peat using computed tomography, Hydrology and Earth System Sciences 13 (2009) 1993–2002.