Manufacturing Technology 2019, 19(1):37-41 | DOI: 10.21062/ujep/241.2019/a/1213-2489/MT/19/1/37

Structural Changes and Microstructure of Maraging Steel Lattice Structures using Additive Manufacturing

Pavel Hanzl, Ivana Zetková, Ludmila Kučerová
Faculty of Mechanical Engineering, University of West Bohemia. Univerzitní2732/8, 306 14 Pilsen. Czech Republic

Direct Metal Laser Sintering (DMLS) is a method of additive manufacturing (AM), which builds metal parts in a layer by layer procedure based on a CAD template. The melting of metal powder by an energy beam and successful mastering of the whole manufacturing procedure requires complex management. Physical and chemical metallurgical phenomena occur during melting of the material and the final microstructure depends on many factors. This study investigates the microstructure of struts depending on their distance from the building platform. It is known that metal powder does not allow the dissipation of heat in the same way as molten material due to gas interstitial volume between the spherical particles. Metallography and micro-hardness were investigated on maraging steel 1.2709. Different melting strategies are recognizable in the macroscopic structure of metal alloys. Interesting facts have been discovered, for instance lose molten group or change of hardness depending on a shape of metal cells. In generally, significant differences were not found between individual specimens.

Keywords: Metal Additive Manufacturing, Cellular Lattice Structures, Metallography, Selective Laser Melting
Grants and funding:

Project LO1502 ‘Development of the Regional Technological Institute’ under the auspices of the National Sustainability Programme I. of the Ministry of Education of the Czech Republic aimed at supporting research, experimental development and innovation.

Published: February 1, 2019  Show citation

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Hanzl P, Zetková I, Kučerová L. Structural Changes and Microstructure of Maraging Steel Lattice Structures using Additive Manufacturing. Manufacturing Technology. 2019;19(1):37-41. doi: 10.21062/ujep/241.2019/a/1213-2489/MT/19/1/37.
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    References

    1. M. SHELLABEAR, O. NYRHILÄ Advances in materials and properties of direct metal laser-sintered parts, Available from: http://www.rm-platform.com/index2.php?option=com_docman&task=doc_view&gid=549&Itemid=1
    2. GU, D., SHEN, Y. (2008) Processing conditions and microstructural features of porous 316L stainless steel components by DMLS, Published by Elsevier Ltd, Applied Surface Science 255 (2008) 1880-1887 Go to original source...
    3. GU, D., SHEN, Y. (2009) Balling phenomena in direct laser sintering of stainless steel powder: Metallurgical mechanisms and control methods, Published by Elsevier Ltd, Materials and Design 30 (2009) 2903-2910 Go to original source...
    4. YAN, C., HAO, L., HUSSEIN, A., YOUNG, P., HUANG, J. (2015) Microstructure and mechanical properties of aluminium alloy cellular lattice structures manufactured by direct metal laser sintering, Published by Elsevier Ltd, Materials Science & Engineering A 628 (2015) 238-246 Go to original source...
    5. KHADERI, S. N., DESHPANDE, V. S., FLECK, N. A. (2013) The stiffness and strength of the gyroid lattice, International Journal of Solids and Structures, Volume 51, Issues 23-24, Pages 3866-3877, ISSN 0020-7683 Go to original source...
    6. YASA E., KEMPEN, K., KRUTH, J.-P., VAN, H.J. (2010) Microstructure and mechanical properties of maraging steel 300 after selective laser melting, Catholic 21st Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2010. 383-396.
    7. KEMPEN, K. et al. (2011) Microstrukture and mechanical properties of Selective Laser Melted 18Ni-300 steel, Physics Procedia, Volume 12, 2011, Pages 255-263, ISSN 1875-3892 Go to original source...
    8. KEJZLAR, P., MACHUTA, J., NOVÁ, I. (2017) Comparison of the Structure of CuZn40MnAl Alloy Casted into Sand and Metal Moulds, Published by Manufacturing Technology, ISSN 1213-2489, February 2017, Vol. 17, No. 1, Paper number: M20179 Go to original source...
    9. ©ČŮRY, J., PASTIRČÁK, R. (2016) Effect of Technological Parameters on the Heat Transfer Coefficient in Alloy AlCu4Ti using Squeeze Casting Technology, Published by Manufacturing Technology, ISSN 1213-2489, June 2016, Vol. 16, No. 3, Paper number: M2016118 Go to original source...
    10. QIU, Ch., YUE, S. et al. (2015) Influence of processing conditions on strut structure and compressive properties of cellular lattice structures fabricated by selective laser melting, Materials Science and Engineering: A, Volume 628, 2015, Pages 188-197, ISSN 0921-5093 Go to original source...
    11. MATLÁK, J., DLOUHÝ, I. (2018) Properties of Electron Beam Hardened Layers made by Different Beam Deflection, Published by Manufacturing Technology, April 2018, Vol. 18, No. 2, Pages 279-284, ISSN 1213-2489 Go to original source...
    12. EOS MaragingSteel MS1, EOS, online [2018-08-07], available from: https://cdn.eos.info/1deee2b550955632/b3615b80c80a/MS-MS1-M290_Material_data_sheet_10-17_en.pdf

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