Skip to main content
SpringerLink
Log in

The Effect of Boron and Zirconium on the Structure and Tensile Properties of the Cast Nickel-Based Superalloy ATI 718Plus

  • Published:
Journal of Materials Engineering and Performance Aims and scope Submit manuscript

Abstract

The effects of boron and zirconium on cast structure, hardness, and tensile properties of the nickel-based superalloy 718Plus were investigated. For this purpose, five alloys with different contents of boron and zirconium were cast via vacuum induction melting and then purified via vacuum arc remelting. Microstructural analysis by light-optical microscope and scanning electron microscope equipped with energy-dispersive x-ray spectroscopy and phase studies by x-ray diffraction analysis were performed. The results showed that boron and zirconium tend to significantly reduce dendritic arm spacing and increase the amount of Laves, Laves/gamma eutectic, and carbide phases. It was also found that boron led to the formation of B4C and (Cr, Fe, Mo, Ni, Ti)3B2 phases and zirconium led to the formation of intermetallic phases and ZrC carbide. In the presence of boron and zirconium, the hardness and its difference between dendritic branches and inter-dendritic spaces increased by concentrating such phases as Laves in the inter-dendritic spaces. These elements had a negative effect on tensile properties of the alloy, including ductility and strength, mainly because of the increase in the Laves phase. It should be noted that the largest degradation of the tensile properties occurred in the alloys containing the maximum amount of zirconium.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12

Similar content being viewed by others

References

  1. M.C. Kushan, S.C. Uzgur, Y. Uzunonat, F. Diltemiz, Allvac 718Plus™ Superalloy for Aircraft Engine Applications, in Recent Advances in Aircraft Technology, (InTech, Rijeka (Croatia), 2012), p. 75–96

  2. R. Kennedy, Allvac® 718Plus™, Superalloy for the Next Forty Years, in International Symposium Superalloy 718 Derivatives, 2005, p. 625–706

  3. R.L. Kennedy, W.-D. Cao, T.D. Bayha, R. Jeniski, Developments in Wrought Nb Containing Superalloys (718+100 F), Nobium, in Proceedings of International Symposium, 2004, p. 11–21

  4. B. Peterson, D. Frias, D. Brayshaw, R. Helmink, S. Oppenheimer, E. Ott, R. Benn, M. Uchic, On the Development of Cast ATI 718Plus® Alloy for Structural Gas Turbine Engine Components, in International Symposium Superalloy 718 Derivatives, 2012, p. 787–794

  5. B. Peterson, V. Krishnan, D. Brayshaw, R. Helmink, S. Oppenheimer, E. Ott, R. Benn, M. Uchic, Castability of 718Plus® Alloy for Structural Gas Turbine Engine Components, in International Symposium Superalloy 718 Derivatives, 2010, p. 131–146

  6. W. Pennington, Improvement in High-Temperature Alloys by Boron and Zirconium, Met. Progr., 1958, 73(3), p 82–86

    Google Scholar 

  7. R.F. Decker and J.W. Freeman, The Mechanism of Beneficial Effects of Boron and Zirconium on Creep-Rupture Properties of a Complex Heat-Resistant Alloy, Trans. Am. Inst. Min. Metall. Pet. Eng., 1957, 218, p 277–285

    Google Scholar 

  8. J. Radavich, Effects of Zr Variations on the Microstructural Stability of Alloy 713C, in International Symposium Superalloy 718 Derivatives, ed. by M.J. Donachie, Jr., T.M.S. Warrendale, 1968, p. 199–226

  9. L. Yamin, L. Hongjun, L. Jie, W. Zhipeng, H. Yuan, Effect of Zr Addition on Precipitates in K4169 Superalloy, Res. Dev., 2012, 9(1), p 6–10

    Google Scholar 

  10. G. Zhao, L. Yu, G. Yang, W. Zhang, and W. Sun, The Role of Boron in Modifying the Solidification and Microstructure of Nickel-Base Alloy U720Li, J. Alloys Compd., 2016, 686, p 194–203

    Article  Google Scholar 

  11. D. Heydari, A.S. Fard, A. Bakhshi, and J.-M. Drezet, Hot Tearing in Polycrystalline Ni-Based In738LC Superalloy: Influence of Zr Content, J. Mater. Process. Technol., 2014, 214, p 681–687

    Article  Google Scholar 

  12. Y.-L. Tsai, S.-F. Wang, H.-Y. Bor, and Y.-F. Hsu, Effects of Zr Addition on the Microstructure and Mechanical Behavior of a Fine-Grained Nickel-Based Superalloy at Elevated Temperatures, J. Mater. Sci. Eng. A, 2014, 607, p 294–301

    Article  Google Scholar 

  13. P. Kontis, H.M. Yusof, S. Pedrazzini, M. Danaie, K. Moore, P. Bagot, M. Moody, C. Grovenor, and R. Reed, On the Effect of Boron on Grain Boundary Character in a New Polycrystalline Superalloy, Acta Mater., 2016, 103, p 688–699

    Article  Google Scholar 

  14. H. Qin, L. Lin, X.-B. Zhao, S.-F. Gao, J. Zhang, and H.-Z. Fu, Effect of Carbon and Boron Additions on Segregation Behavior of Directionally Solidified Nickel-Base Superalloys with Rhenium, Trans. Nonferrous Met. Soc. China, 2013, 23, p 3257–3264

    Article  Google Scholar 

  15. T. Fedorova, J. Rösler, B. Gehrmann, J. Klöwer, Influence of B and Zr on Microstructure and Mechanical Properties of Alloy 718, in International Symposium Superalloy 718 Derivatives, 2010, p. 836–846

  16. Z. Jie, J. Zhang, T. Huang, H. Su, Y. Zhang, L. Liu, H. Fu, Effects of Boron and Zirconium Additions on the Fluidity, Microstructure and Mechanical Properties of In718C Superalloy, J. Mater. Res., 2016, 31(22), p 3557–3566

    Article  Google Scholar 

  17. ASTM E963 - 95: Standard Practice for Electrolytic Extraction of Phases from Ni and Ni-Fe Base Superalloys Using a Hydrochloric-Methanol Electrolyte, in ASTM Committee, 1995, p. 1–4

  18. A. Miodownik, N. Saunders, and J. Schillé, JMatPro (Java-based Materials Property), A Practical Software for Materials Properties Sente Software Ltd., Guildford, 2006, p 362–366

    Google Scholar 

  19. ASTM E 384 – 99, Standard Test Method for Microindentation Hardness of Materials, in ASTM Committee, 1999, p. 1–24

  20. ASTM E 18 – 03, Standard Test Methods for Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials, in ASTM Committee, 2003, p. 1–22

  21. ASTM E 21 – 03a, Standard Test Methods for Elevated Temperature Tension Tests of Metallic Materials, in ASTM Committee, 2003, p. 1–8

  22. J.J. Schirra, R.H. Caless, F.W. Hatala, The Effects of Laves Phase on the Mechanical Properties of Wrought and Cast+ HIP Inconel 718, in International Symposium Superalloy 718 Derivatives, 1991, p. 375–388

  23. A. Mitchell, A. Schmalz, C. Schvezov, S. Cockroft, The Precipitation of Primary Carbides in Alloy 718, in Proceedings of International Symposium of Metallurgical Application Superalloys 718, 625 Various Derivatives, 1994, p. 79

  24. W.-D. Cao, Solidification and Solid State Phase Transformation of Allvac® 718Plus™ alloy, in International Symposium Superalloy 718 Derivatives, 2005, p. 625–706

  25. R. Ding, Grain Boundary Segregation in Ni-Base (718Plus) Superalloy, Mater. Sci. Technol., 2010, 26, p 36–40

    Article  Google Scholar 

  26. L. Wang, C. Li, J. Dong, and M. Zhang, An Investigation of Microsegregation and Liquid Density Redistribution during Solidification of Inconel 718, Chem. Eng. Commun., 2009, 196, p 754–765

    Article  Google Scholar 

  27. J. Andersson, G. Sjöberg, J. Larsson, Investigation of Homogenization and its Influence on the Repair Welding of Cast Allvac 718Plus®, in International Symposium Superalloy 718 Derivatives, 2010, p. 439–454

  28. J. Andersson, G. Sjöberg, L. Viskari, A. Brederholm, H. Hänninen, C.S. Knee, Hot Cracking of Allvac 718Plus, Alloy 718 and Waspaloy at Varestraint Testing, in Proceedings of 47th Annual Conference Metallurgy, August 24–27, Winnipeg, Canada, 2008

  29. H. Zhu, Y. Tang, Y. Li, Y. Zhu, Z. Hu, and C. Shi, Effect of Boron and Zirconium on Directional Solidification Behaviour and Segregation of DS In738 Superalloy, Mater. High Temp., 1992, 10, p 39–44

    Article  Google Scholar 

  30. G. Bouse, M. Behrendt, Mechanical Properties of Microcast-X Alloy 718 Fine Grain Investment Castings, in Superalloy 718: Metallurgical Application, Proceedings of International Symposium Metallurgical Application Superalloy 718, 1989, p. 319–328

Download references

Author information

Authors and Affiliations

  1. Metallic Materials Research Center, Malek Ashtar University of Technology (MUT), Tehran, Iran

    Seyed Ali Hosseini, Seyed Mehdi Abbasi & Karim Zangeneh Madar

Authors
  1. Seyed Ali Hosseini
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Seyed Mehdi Abbasi
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Karim Zangeneh Madar
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Seyed Ali Hosseini.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Hosseini, S.A., Abbasi, S.M. & Madar, K.Z. The Effect of Boron and Zirconium on the Structure and Tensile Properties of the Cast Nickel-Based Superalloy ATI 718Plus. J. of Materi Eng and Perform 27, 2815–2826 (2018). https://doi.org/10.1007/s11665-018-3372-0

Download citation

  • Received:

  • Revised:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11665-018-3372-0

Keywords

Search

Navigation