Abstract
Precious-metal-modified nickel-based superalloys are being investigated for use in thin gage applications, such as thermal protection systems or heat exchangers, due to their strength and inherent oxidation resistance at temperatures in excess of 1,050°C. This overview paper summarizes the Air Force Research Laboratory (AFRL) interest in experimental two-phase γ-Ni + γ′-Ni3Al superalloys. The AFRL is interested in alloys with a based composition of Ni-15Al-5Cr (at. %) with carbon, boron, and zirconium additions for grain-boundary refinement and strengthening. The alloys currently being evaluated also contain 4–5 at.% of platinum-group metals, in this case platinum and iridium. The feasibility of hot rolling these alloys to a final thickness of 0.12–0.25 mm and obtaining a nearly fully recrystallized microstructure was demonstrated.
Similar content being viewed by others
References
E.A. Avallone, T. Baumeister III, and A.M. Sadegh, editors, Standard Handbook for Mechanical Engineers (New York: McGraw-Hill, 2007), pp. 11-104–11-108.
M.L. Blosser, NASA-TM-110296 (1996), ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19970005361_1997005055.pdf .
David E. Myers, Carl J. Martin, and Max L. Blosser, AIAA Paper, 99-3459 (1999), ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20040086853_2004091432. pdf .
Reusable Launch Vehicle Program Fact Sheet NASA website (September 1997), www.hq.nasa.gov/office/pao/History/x-33/rlv_facts.htm .
Ravi C. Penmetsa, Ramana V. Grandhi, and Mark Haney, AIAA, 44(11) (2006), pp. 2663–2671.
C.T. Sims, N.S. Stoloff, and W.C. Hagel, Superalloys II (New York: John Wiley and Sons, 1987), pp. 301–310.
C.T. Sims, N.S. Stoloff, and W.C. Hagel, Superalloys II (New York: John Wiley and Sons, 1987), pp. 368–369.
B. Gleeson et al., Mater. Sei. Forum, 461–464 (2004), pp. 213–222.
S. Hayashi et al., Acta Mater., 53 (2005), pp. 3319–3328.
D. Pan et al. Acta Mater., 51(8) (2003), pp. 2205–2217.
M.P. Taylor et al., Acta Mater., 51(8) (2003), pp. 3241–3252.
T. Izumi and B. Gleeson, Mater. Sei. Forum, 522–523 (2006), pp. 221–228.
S. Hayashi, T. Narita, and B. Gleeson, Mater. Sei. Forum, 522–523 (2006), pp. 229–238.
G.J. Tatlock, T.J. Hurd, and J.S. Punni, Platinum Metals Rev., 31 (1987), pp. 26–31.
D.R. Coupland, C.W. Corti, and G.L. Selman, in: Proceedings of the Petten Intl Conf. on the Behaviour of High Temperature Alloys in Aggressive Environments, ed. I. Kirman et al. (London: The Metals Society, 1980), pp. 525–536.
C.W. Corti, D.R. Coupland, and G.L. Selman, Platinum Metals Rev., 24 (1980), pp. 2–11.
D.R. Coupland, C.W. Hall, and I.R. McGill, Platinum Metals Rev., 26 (1982), pp. 146–157.
H. Murakami et al, Superalloys, ed. K.A. Green, T.M. Pollock, and R.D. Kissinger (Warrendale, PA: TMS, 2000), pp. 747–756.
A.J. Heidloff et al, Metall. Mater. Trans. A, 40A (2009), pp. 1529–1540.
Platinum Today (Johnson Matthey, 40–42 Hatton Garden, London EC1N 8EE, U.K.), www.platinum.matthey.com .
H. Borodians’ka et al, Intermetallics, 10 (2002), pp. 255–262.
H. Chang and I. Baker, Mater. Sei. Eng. A, 476 (2008), pp. 46–59.
D.L. Ballard et al, J. Eur. Ceram. Soc, 30(11) (2010), pp. 2305–2312.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Ballard, D.L., Pilchak, A.L. The use of precious-metal-modified nickel-based superalloys for thin gage applications. JOM 62, 45–47 (2010). https://doi.org/10.1007/s11837-010-0155-y
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11837-010-0155-y