Abstract
Boron additions to Ni-based superalloys are considered to be beneficial to the creep properties of the alloy, as boron has often been reported to increase grain boundary cohesion, increase ductility, and promote the formation of stable boride phases. Despite the importance, it is not well understood whether these improvements are associated with the presence of elemental boron or stable borides along the grain boundaries. In this investigation, two experimental powder-processed Ni-based superalloys containing elevated levels of Nb were found to exhibit increased solubility for B in the γ matrix when compared to similar commercial Ni-based superalloys. This resulted in an overall lower B concentration at grain boundaries that suppressed boride formation. As the predictive capability of CALPHAD database models for Ni-based superalloys have improved over the years, some discrepancies may still persist around compositionally heterogeneous features such as grain boundaries. Improved quantification of the characteristic partitioning of B as a function of the bulk alloy composition is required for understanding and predicting the stability of borides.
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T.M. Pollock and S. Tin: J. Propuls. Power, 2006, vol. 22, pp. 361–74.
D. Furrer and H. Fecht: JOM, 1999, vol. 51, pp. 14–7.
C.T. Sims, N.S. Stoloff, and W.C. Hagel: Superalloys II: High-Temperature Materials for Aerospace and Industrial Power, Wiley, Hoboken, 1987.
R.R. Unocic, L. Kovarik, C. Shen, P.M. Sarosi, Y. Wang, J. Li, S. Ghosh, and M.J. Mills: Superalloys 2008 (Eleventh International Symposium), TMS, 2008, pp. 377–85.
D. Locq, P. Caron, S. Raujol, F. Pettinari-Sturmel, A. Coujou, and N. Clement: Superalloys 2004 (Tenth International Symposium), TMS, 2004, pp. 179–87.
R.C. Reed: The Superalloys Fundamentals and Applications, Cambridge University Press, Cambridge 2006.
M.J. Donachie and S.J. Donachie: Superalloys: A Technical Guide, 2nd edn., Asm International, Materials Park, OH, 2002.
R.F. Decker and C.T. Sims: The Metallurgy of Nickel-Base Superalloys, Paul D. Merica Research Laboratory, 1972.
R.R. Unocic, G.B. Viswanathan, P.M. Sarosi, S. Karthikeyan, J. Li, and M.J. Mills: Mater. Sci. Eng. A, 2008, vol. 483–484, pp. 25–32.
T.M. Pollock and R.D. Field: Dislocations in Solids, Elsevier, Amsterdam, 2002, pp. 547–618.
R.W. Kozar, A. Suzuki, W.W. Milligan, J.J. Schirra, M.F. Savage, and T.M. Pollock: Metall. Mater. Trans. A, 2009, vol. 40, pp. 1588–603.
Y. Mishima, S. Ochiai, M. Yodogawa, and T. Suzuki: Trans. Japan Inst. Met., 1986, vol. 27, pp. 41–50.
Y. Mishima, S. Ochiai, N. Hamao, M. Yodogawa, and T. Suzuki: Trans. Japan Inst. Met., 1986, vol. 27, pp. 648–55.
S. Antonov, M. Detrois, D. Isheim, D. Seidman, R.C. Helmink, R.L. Goetz, E. Sun, and S. Tin: Mater. Des., 2015, vol. 86, pp. 649–55.
S. Antonov, J. Huo, Q. Feng, D. Isheim, D.N. Seidman, R.C. Helmink, E. Sun, and S. Tin: Mater. Sci. Eng. A, 2017, vol. 687, pp. 232–40.
S. Antonov, M. Detrois, R.C. Helmink, and S. Tin: J. Alloys Compd., 2015, vol. 626, pp. 76–86.
M. Detrois, R.L. Goetz, R.C. Helmink, and S. Tin: Mater. Sci. Eng. A, 2015, vol. 647, pp. 157–62.
T.J. Garosshen, T.D. Tillman, and G.P. McCarthy: Metall. Trans. A, 1987, vol. 18, pp. 69–77.
B.C. Yan, J. Zhang, and L.H. Lou: Mater. Sci. Eng. A, 2008, vol. 474, pp. 39–47.
P.J. Zhou, J.J. Yu, X.F. Sun, H.R. Guan, and Z.Q. Hu: Mater. Sci. Eng. A, 2008, vol. 491, pp. 159–63.
C.G. Bieber and R.F. Decker: Trans. Metall. Soc. Aime, 1961, vol. 221, pp. 629–36.
P. Kontis, H.A.A. Mohd Yusof, K.L.L. Moore, C.R.M.R.M. Grovenor, and R.C.C. Reed: MATEC Web Conference, 2014, vol. 14, p. 17003.
P. Kontis, H.A.M. Yusof, S. Pedrazzini, M. Danaie, K.L. Moore, P.A.J. Bagot, M.P. Moody, C.R.M. Grovenor, and R.C. Reed: Acta Mater., 2016, vol. 103, pp. 688–99.
P. Kontis, E. Alabort, D. Barba, D.M. Collins, A.J. Wilkinson, and R.C. Reed: Acta Mater., 2017, vol. 124, pp. 489–500.
D. Tytko, P.-P. Choi, J. Klöwer, A. Kostka, G. Inden, and D. Raabe: Acta Mater., 2012, vol. 60, pp. 1731–40.
H. Kitaguchi: Metallurgy - Advances in Materials and Processes, 2012, pp. 20–41.
X.B. Hu, L.Z. Zhou, J.S. Hou, X.Z. Qin, and X.L. Ma: Philos. Mag. Lett., 2016, vol. 96, pp. 273–9.
S. Antonov, J. Huo, Q. Feng, D. Isheim, D.N. Seidman, R.C. Helmink, E. Sun, and S. Tin: Scr. Mater., 2017, vol. 138, pp. 35–8.
T.P. Gabb, R.A. MacKay, S.L. Draper, C.K. Sudbrack, and M. V. Nathal: The Mechanical Properties of Candidate Superalloys for a Hybrid Turbine Disk, Cleveland, Ohio, 2013.
C.K. Sudbrack, L.J. Evans, A. Garg, D.E. Perea, and D.K. Schreiber: Superalloys 2016 (Thirteenth International Symposyum), Wiley, Hoboken, 2016, pp. 927–36, DOI:10.1002/9781119075646.ch99.
W. Chen, M.C.C.C. Chaturvedi, N.L.L.L. Richards, and G. McMahon: Metall. Mater. Trans. A, 1998, vol. 29, pp. 1947–54.
M.A. Balachander, K. Vishwakarma, and N.L. Richards: Mater. Sci. Technol., 2012, vol. 28, pp. 380–4.
J.A.A. Domingue, W.J.J. Boesch, and J.F.F. Radavich: Superalloys 1980 (Fourth International Symposium), 1980, pp. 335–44, DOI:10.7449/1980/Superalloys_1980_335_344.
M.A. Balachander, K. Vishwakarma, B. Tang, and N.L. Richards: Mater. Sci. Technol., 2011, vol. 27, pp. 805–10.
J.M. Walsh and B.H. Rear: Metall. Trans. A, 1975, vol. 6, pp. 950.
P.A.J. Bagot, O.B.W. Silk, J.O. Douglas, S. Pedrazzini, D.J. Crudden, T.L. Martin, M.C. Hardy, M.P. Moody, and R.C. Reed: Acta Mater., 2017, vol. 125, pp. 156–65.
B.H. Toby and R.B. Von Dreele: J. Appl. Crystallogr., 2013, vol. 46, pp. 544–9.
K. Momma and F. Izumi: J. Appl. Crystallogr., 2011, vol. 44, pp. 1272–6.
D.N. Seidman and K. Stiller: MRS Bull., 2009, vol. 34, pp. 717–24.
D.N. Seidman: Annu. Rev. Mater. Res., 2007, vol. 37, pp. 127–58.
J.-O. Andersson, T. Helander, L. Höglund, P. Shi, and B. Sundman: Calphad, 2002, vol. 26, pp. 273–312.
O.C. Hellman, J.A. Vandenbroucke, J. Rüsing, D. Isheim, and D.N. Seidman: Microsc. Microanal., 2000, vol. 6, pp. 437–44.
G.W. Meetham: Met. Technol., 1984, vol. 11, pp. 414–8.
P. Kontis, S. Pedrazzini, Y. Gong, P.A.J. Bagot, M.P. Moody, and R.C. Reed: Scr. Mater., 2017, vol. 127, pp. 156–9.
O.A. Ojo and H.R. Zhang: Metall. Mater. Trans. A Phys. Metall. Mater. Sci., 2008, vol. 39, pp. 2799–803.
H.R. Zhang and O.A. Ojo: J. Mater. Sci., 2008, vol. 43, pp. 6024–8.
T. Alam, P.J. Felfer, M. Chaturvedi, L.T. Stephenson, M.R. Kilburn, and J.M. Cairney: Metall. Mater. Trans. A, 2012, vol. 43, pp. 2183–91.
B. Du, L. Sheng, C. Cui, J. Yang, and X. Sun: Mater. Charact., 2017, vol. 128, pp. 109–14.
R. Reed: Powder Metallurgy and Superalloys, Cambridge University Press, Cambridge, 2007.
G.H. Gessinger and M.J. Bomford: Int. Metall. Rev., 1974, vol. 19, pp. 51–76.
L. Letellier, A. Bostel, and D. Blavette: Scr. Metall. Mater., 1994, vol. 30, pp. 1503–8.
T.P. Gabb, A. Garg, D.R. Miller, C.K. Sudbrack, D.R. Hull, D. Johnson, R.B. Rogers, J. Gayda, and S.L. Semiatin: Formation of Minor Phases in a Nickel-Based Disk Superalloy, Cleveland, Ohio, 2012.
E.J.J. Pickering, H. Mathur, A. Bhowmik, O.M.D Messé, J.S.S. Barnard, M.C. Hardy, R. Krakow, K. Loehnert, H.J.J. Stone, and C.M. Rae: Acta Mater., 2012, 60:2757–69.
J.-C. Zhao and M.F. Henry: Adv. Eng. Mater., 2002, vol. 4, pp. 501–8.
Acknowledgments
Financial support for this work was provided by Rolls-Royce Corporation and NSF CMMI-1537468. APT was performed at the Northwestern University Center for Atom-Probe Tomography (NUCAPT). The local-electrode atom-probe tomograph at NUCAPT was acquired and upgraded with equipment grants from the MRI program of the National Science Foundation (Grant Number DMR-0420532) and the DURIP program of the Office of Naval Research (Grant Numbers N00014-0400798, N00014-0610539, N00014-0910781). This work made use of the MatCI Facility at Northwestern University. NUCAPT and MatCI received support from the MRSEC program (NSF DMR-1121262) at the Materials Research Center, NUCAPT through the SHyNE Resource (NSF NNCI-1542205), and the Initiative for Sustainability and Energy at Northwestern (ISEN). This work made use of the EPIC, Keck-II, and/or SPID facility(ies) of Northwestern University’s NUANCE Center, which has received support from the Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF ECCS-1542205); the MRSEC program (NSF DMR-1121262) at the Materials Research Center; the International Institute for Nanotechnology (IIN); the Keck Foundation; and the State of Illinois, through the IIN.
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Antonov, S., Huo, J., Feng, Q. et al. Comparison of Thermodynamic Predictions and Experimental Observations on B Additions in Powder-Processed Ni-Based Superalloys Containing Elevated Concentrations of Nb. Metall Mater Trans A 49, 729–739 (2018). https://doi.org/10.1007/s11661-017-4380-7
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DOI: https://doi.org/10.1007/s11661-017-4380-7