Fatigue Strength of 316 L Stainless Steel Manufactured by Selective Laser Melting
Source abstract
Abstract
Abstract In this study, the fatigue strength of 316 L stainless steel manufactured by selective laser melting (SLM) is evaluated. The effect of powder layer thickness and postmachining is investigated. Specimens were produced with 30 and 50 µm layer thickness and tested under high cycle fatigue in as-printed and postmachined conditions. Examination of the specimens reveals that in the as-printed condition, fatigue strength suffers from high roughness and surface tensile residual stresses as well as defects such as pores and lack of fusion voids. After machining, the fatigue strength was improved due to lower surface roughness, presence of compressive residual stresses, and removal of surface porosity. The results show that increasing the layer thickness (within the range tested) has a minor negative impact on fatigue strength; however, it has a major positive impact on the productivity of the SLM process. In addition, it is clear that the impact of postmachining on fatigue is far greater than that of the layer thickness.
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Research context
OpenAlex topics: Additive Manufacturing Materials and Processes · Additive Manufacturing and 3D Printing Technologies · Welding Techniques and Residual Stresses
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References (20)
Show source-provided references
1. C. Elangeswaran, A. Cutolo, G.K. Muralidharan, C. de Formanoir, F. Berto, K. Vanmeensel, and B. Van Hooreweder, Effect of Post-Treatments on the Fatigue Behaviour of 316L Stainless Steel Manufactured by Laser Powder Bed Fusion, Int. J. Fatigue, 2019, 123, p 31–39. https://doi.org/10.1016/j.ijfatigue.2019.01.01310.1016/j.ijfatigue.2019.01.013 ↗
2. R. Shrestha, J. Simsiriwong, N. Shamsaei, M.S. Thompson, and L. Bian, “Effect of Build Orientation on the Fatigue Behavior of Stainless Steel 316L Manufactured via a Laser Powder Bed Fusion Process,” 27th Annual International Solid Freeform Fabrication Symposium, 2016, p 605–616. https://pdfs.semanticscholar.org/e8b3/b9988d312d59816ac07a0e21881413efdf11.pdf. Accessed 27 May 2020
3. T. Wohlers, I. Campbell, O. Diegel, R. Huff, and J. Kowen, Cost Benefits of DfAM, Wohlers Report, Wohlers Associates Inc., 2019, p 221–225.
4. S. Afkhami, M. Dabiri, S.H. Alavi, T. Björk, and A. Salminen, Fatigue Characteristics of Steels Manufactured by Selective Laser Melting, Int. J. Fatigue, 2019, 122, p 72–83. https://doi.org/10.1016/j.ijfatigue.2018.12.02910.1016/j.ijfatigue.2018.12.029 ↗
5. G.E. Dieter, Mechanical Metallurgy, 3rd ed., McGraw-Hill, Boston, 1986
6. T.M. Mower and M.J. Long, Mechanical Behavior of Additive Manufactured, Powder-Bed Laser-Fused Materials, Mater. Sci. Eng., A, 2016, 651, p 198–213. https://doi.org/10.1016/j.msea.2015.10.06810.1016/j.msea.2015.10.068 ↗
7. E. Uhlmann, C. Fleck, G. Gerlitzky, and F. Faltin, Dynamical Fatigue Behavior of Additive Manufactured Products For a Fundamental Life Cycle Approach, Procedia CIRP, 2017, 61, p 588–593. https://doi.org/10.1016/j.procir.2016.11.13810.1016/j.procir.2016.11.138 ↗
8. B. Blinn, M. Klein, C. Gläßner, M. Smaga, J. Aurich, and T. Beck, An Investigation of the Microstructure and Fatigue Behavior of Additively Manufactured AISI, 316L Stainless Steel with Regard to the Influence of Heat Treatment, Metals (Basel), 2018, 8(4), p 220. https://doi.org/10.3390/met804022010.3390/met8040220 ↗
9. M. Zhang, C.-N. Sun, X. Zhang, J. Wei, D. Hardacre, and H. Li, Predictive Models for Fatigue Property of Laser Powder Bed Fusion Stainless Steel 316L, Mater. Des., 2018, 145, p 42–54. https://doi.org/10.1016/j.matdes.2018.02.05410.1016/j.matdes.2018.02.054 ↗
10. A. Riemer, S. Leuders, M. Thöne, H.A. Richard, T. Tröster, and T. Niendorf, On the Fatigue Crack Growth Behavior in 316L Stainless Steel Manufactured by Selective Laser Melting, Eng. Fract. Mech., 2014, 120, p 15–25. https://doi.org/10.1016/j.engfracmech.2014.03.00810.1016/j.engfracmech.2014.03.008 ↗
11. Non-Destructive Testing - Test Method for Residual Stress Analysis by X-Ray Diffraction, Swedish Stand. Inst., 2008, SS-EN 1530.
12. Metallic Materials—Verification of the Alignment of Fatigue Testing Machines, Int. Organ. Stand., 2012, ISO 23788:
13. K. Solberg and F. Berto, What Is Going on with Fatigue of Additively Manufactured Metals?, Mater. Des. Process. Commun., 2019. https://doi.org/10.1002/mdp2.8410.1002/mdp2.84 ↗
14. D.Y. Jang, T.R. Watkins, K.J. Kozaczek, C.R. Hubbard, and O.B. Cavin, Surface Residual Stresses in Machined Austenitic Stainless Steel, Wear, 1996, 194(1–2), p 168–173. https://doi.org/10.1016/0043-1648(95)06838-410.1016/0043-1648(95)06838-4 ↗
15. A. Di Schino, M. Barteri, and J.M. Kenny, Effects of Grain Size on the Properties of a Low Nickel Austenitic Stainless Steel, J. Mater. Sci., 2003, 38(23), p 4725–4733. https://doi.org/10.1023/A:102747091785810.1023/A:1027470917858 ↗
16. E. Uhlmann, G. Gerlitzky, and C. Fleck, Fatigue Behavior of Additive Manufactured Parts in Different Process Chains - An Experimental Study, Ann. Int. Solid Freefrom Fabricat. Sympo., 2017, 2, p 48–60
17. J.P. Strizak, H. Tian, P.K. Liaw, and L.K. Mansur, Fatigue Properties of Type 316LN Stainless Steel in Air and Mercury, J. Nucl. Mater., 2005, 343(1–3), p 134–144. https://doi.org/10.1016/j.jnucmat.2005.03.01910.1016/j.jnucmat.2005.03.019 ↗
18. C. Qiu, N.J.E. Adkins, and M.M. Attallah, Microstructure and Tensile Properties of Selectively Laser-Melted and of HIPed Laser-Melted Ti-6Al-4V, Mater. Sci. Eng., A, 2013, 578, p 230–239. https://doi.org/10.1016/j.msea.2013.04.09910.1016/j.msea.2013.04.099 ↗
19. E. Saiz, A.P. Tomsia, and R.M. Cannon, Ridging Effects on Wetting and Spreading of Liquids on Solids, Acta Mater., 1998, 46(7), p 2349–2361. https://doi.org/10.1016/S1359-6454(98)80016-510.1016/S1359-6454(98)80016-5 ↗
20. I. Yadroitsev, Selective Laser Melting, Lambert Academic Publishing, Saarbrucken, 2009