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Build Orientation Effects on Texture and Mechanical Properties of Selective Laser Melting Inconel 718

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Abstract

The production of components via selective laser melting (SLM) metal additive manufacturing results in microstructures unique to the process that are highly dependent on laser processing parameters and orientation of part geometry relative to the build direction. This study investigates the variation in tensile properties of SLM Inconel 718 at varying angles with respect to build direction. ASTM E8 tensile specimens were built in XY, Z, and B+45 from Z orientations to near-net shape, HIP and heat treated, and tensile tested at room temperature. Orientation dependence of mechanical properties was observed; Z samples had the lowest strength and highest elongation, while XY samples had the highest strength and lowest elongation. Optical, SEM, and EBSD analysis were conducted to probe for microstructure variation that could be the cause of the difference in mechanical properties. Analysis of pole figures and grain maps suggests a preferred grain texture and twinning orientation that aligns with the build direction, which may contribute to the anisotropic enhancement in ductility.

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References

  1. H. Wei, J. Mazumder, and T. DebRoy, Evolution of Solidification Texture During Additive Manufacturing, Sci. Rep., 2015, 5, p 16446

    Article  Google Scholar 

  2. V. Popovich, E.V. Brisov, A.A. Popovich, V.S. Sufiiarov, D.V. Masaylo, and L. Alzina, Functionally Graded Inconel 718 Processed by Additive Manufacturing: Crystallographic Texture, Anisotropy of Microstructure and Mechanical Properties, Mater. Des., 2017, 114, p 441–449

    Article  Google Scholar 

  3. J. Cao, F. Liu, X. Lin, C. Huang, J. Chen, and W. Huang, Effect of Overlap Rate on Recrystallization Behaviors of Laser Solid Formed Inconel 718 Superalloy, Opt. Laser Technol., 2013, 45(Supplement C), p 228–235

    Article  Google Scholar 

  4. H.E. Helmer, C. Körner, and R.F. Singer, Additive Manufacturing of Nickel-Based Superalloy Inconel 718 by Selective Electron Beam Melting: Processing Window and Microstructure, J. Mater. Res., 2014, 29(17), p 1987–1996

    Article  Google Scholar 

  5. P. Hanzl, M. Zetek, T. Bakša, and T. Kroupa, The Influence of Processing Parameters on the Mechanical Properties of SLM Parts, Procedia Eng., 2015, 100(Supplement C), p 1405–1413

    Article  Google Scholar 

  6. M.-W. Wu and P.-H. Lai, The Positive Effect of Hot Isostatic Pressing on Improving the Anisotropies of Bending and Impact Properties in Selective Laser Melted Ti-6Al-4V alloy, Mater. Sci. Eng. A, 2016, 658, p 429–438

    Article  Google Scholar 

  7. M. Ni et al., Anisotropic Tensile Behavior of In Situ Precipitation Strengthened Inconel 718 Fabricated by Additive Manufacturing, Mater. Sci. Eng. A, 2017, 701, p 344–351

    Article  Google Scholar 

  8. A.A. Popovich, V.S. Sufiiarov, E.V. Borisov, I.A. Polozov, D.V. Masaylo, and A.V. Grigoriev, Anisotropy of Mechanical Properties of Products Manufactured Using Selective Laser Melting of Powdered Materials, Russ. J. Non-Ferr. Met., 2017, 58(4), p 389–395

    Article  Google Scholar 

  9. D. Deng, J. Moverare, R.L. Peng, and H. Söderberg, Microstructure and Anisotropic Mechanical Properties of EBM Manufactured Inconel 718 and Effects of Post Heat Treatments, Mater. Sci. Eng. A, 2017, 693, p 151–163

    Article  Google Scholar 

  10. D. Deng, R.L. Peng, H. Brodin, and J. Moverare, Microstructure and Mechanical Properties of Inconel 718 Produced by Selective Laser Melting: Sample Orientation Dependence and Effects of Post Heat Treatments, Mater. Sci. Eng. A, 2018, 713, p 294–306

    Article  Google Scholar 

  11. L. Papadakis, D. Chantzis, and K. Salonitis, On the Energy Efficiency of Pre-heating Methods in SLM/SLS Processes, Int. J. Adv. Manuf. Technol., 2018, 95(1), p 1325–1338

    Article  Google Scholar 

  12. A.S. Wu, D.W. Brown, M. Kumar, G.F. Gallegos, and W.E. King, An Experimental Investigation into Additive Manufacturing-Induced Residual Stresses in 316L Stainless Steel, Metall. Mater. Trans. A, 2014, 45(13), p 6260–6270

    Article  Google Scholar 

  13. A. Vasinonta, J.L. Beuth, and M. Griffith, Process Maps for Predicting Residual Stress and Melt Pool Size in the Laser-Based Fabrication of Thin-Walled Structures, J. Manuf. Sci. Eng., 2007, 129(1), p 101–109

    Article  Google Scholar 

  14. J.J.S. Dilip et al., Influence of Processing Parameters on the Evolution of Melt Pool, Porosity, Microstructures in Ti-6Al-4V Alloy Parts Fabricated by Selective Laser Melting, Prog. Addit. Manuf., 2017, 2, p 157–167

    Article  Google Scholar 

  15. X. Shi, S. Ma, C. Liu, and Q. Wu, Parameter Optimization for Ti-47Al-2Cr-2Nb in Selective Laser Melting Based on Geometric Characteristics of Single Scan Tracks, Opt. Laser Technol., 2017, 90, p 71–79

    Article  Google Scholar 

  16. Q.B. Jia and D.D. Gu, Selective Laser Melting Additive Manufacturing of Inconel 718 Superalloy Parts: Densification, Microstructure and Properties, J. Alloys Compd., 2014, 585, p 713–721

    Article  Google Scholar 

  17. I. Yadroitsev, P. Krakhmalev, I. Yadroitsava, S. Johansson, and I. Smurov, Energy Input Effect on Morphology and Microstructure of Selective Laser Melting Single Track from Metallic Powder, J. Mater. Process. Technol., 2013, 213(4), p 606–613

    Article  Google Scholar 

  18. N.H. Sateesh, G.C.M. Kumar, K. Prasad, C.K. Srinivasa, and A.R. Vinod, Microstructure and Mechanical Characterization of Laser Sintered Inconel-625 Superalloy, Procedia Mater. Sci., 2014, 5, p 772–779

    Article  Google Scholar 

  19. L.N. Carter, C. Martin, P.J. Withers, and M.M. Attallah, The Influence of the Laser Scan Strategy on Grain Structure and Cracking Behaviour in SLM Powder-Bed Fabricated Nickel Superalloy, J. Alloys Compd., 2014, 615, p 338–347

    Article  Google Scholar 

  20. G.E. Bean, D.B. Witkin, T.D. McLouth, D.N. Patel, and R.J. Zaldivar, Effect of Laser Focus Shift on Surface Quality and Density of Inconel 718 Parts Produced via Selective Laser Melting, Addit. Manuf., 2018, 22, p 207–215

    Article  Google Scholar 

  21. S. Kou, Welding Metallurgy, Wiley, Hoboken, 2003, p 431–446

    Google Scholar 

  22. J. Blecher, T. Palmer, and T. DebRoy, Solidification Map of a Nickel-Base Alloy, Metall. Mater. Trans. A, 2014, 45(4), p 2142–2151

    Article  Google Scholar 

  23. F. Yan, W. Xiong, and J.E. Faierson, Grain Structure Control of Additively Manufactured Metallic Materials, Materials, 2017, 10(11), p 1260

    Article  Google Scholar 

  24. K. Amato et al., Microstructures and Mechanical Behavior of Inconel 718 Fabricated by Selective Laser Melting, Acta Mater., 2012, 60(5), p 2229–2239

    Article  Google Scholar 

  25. AMS 5662, Nickel Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings 52.5Ni-19Cr-3.0Mo-5.1Cb (Nb)-0.90Ti-0.50AI-18Fe Consumable Electrode or Vacuum Induction Melted 1775°F (968°C) Solution Heat Treated, Precipitation-Hardenable—UNS N07718, 2016

  26. AMS 2774, Heat Treatment Wrought Nickel Alloy and Cobalt Alloy Parts, SAE International, 2016. https://doi.org/10.4271/AMS2774E

  27. ASTM E8/E8M-16a, Standard Test Methods for Tension Testing of Metallic Materials, 2016

  28. O. Özgün, H.O. Gulsoy, R. Yilmaz, and F. Findik, Microstructural and Mechanical Characterization of Injection Molded 718 Superalloy Powders, J. Alloys Compd., 2013, 576, p 140–153

    Article  Google Scholar 

  29. L. Chang, W. Sun, Y. Cui, and R. Yang, Preparation of Hot-Isostatic-Pressed Powder Metallurgy Superalloy Inconel 718 Free of Prior Particle Boundaries, Mater. Sci. Eng. A, 2017, 682, p 341–344

    Article  Google Scholar 

  30. T.D. McLouth et al., The Effect of Laser Focus Shift on Microstructural Variation of Inconel 718 Produced by Selective Laser Melting, Mater. Des., 2018, 149, p 205–213

    Article  Google Scholar 

  31. AMS 5663, Nickel Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings 52.5Ni-19Cr-3.0Mo-5.1Cb (Nb)-0.90Ti-0.50Al-18Fe Consumable Electrode or Vacuum Induction Melted 1775°F (968°C) Solution and Precipitation Heat Treated, 2016

  32. X. Wang and K. Chou, Effects of Thermal Cycles on the Microstructure Evolution of Inconel 718 During Selective Laser Melting Process, Addit. Manuf., 2017, 18, p 1–14

    Article  Google Scholar 

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Authors and Affiliations

  1. Materials Science Department, Space Materials Laboratories, The Aerospace Corporation, El Segundo, CA, USA

    G. E. Bean, T. D. McLouth, D. B. Witkin, S. D. Sitzman, P. M. Adams & R. J. Zaldivar

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  1. G. E. Bean
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  2. T. D. McLouth
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  3. D. B. Witkin
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  4. S. D. Sitzman
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  6. R. J. Zaldivar
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Correspondence to G. E. Bean.

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Bean, G.E., McLouth, T.D., Witkin, D.B. et al. Build Orientation Effects on Texture and Mechanical Properties of Selective Laser Melting Inconel 718. J. of Materi Eng and Perform 28, 1942–1949 (2019). https://doi.org/10.1007/s11665-019-03980-w

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  • DOI: https://doi.org/10.1007/s11665-019-03980-w

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