Abstract
Understanding of the solution heat treatment response of a second generation, single-crystal nickel-based superalloy, CMSX-4, is necessary before the process can be shortened in an effort to save money. The current solution heat treatment used for CMSX-4 involves high temperatures for long durations and can be quite expensive. This investigation helps to characterize the heat-treatment process for this alloy. The achieved microstructure is described for both the as-cast and fully solution-annealed conditions. In addition, an alternate, less expensive heat treatment was selected for its lower temperatures and shorter overall duration. Microstructures and differential thermal analysis are presented for all three conditions.
Similar content being viewed by others
References
“Metallurgy, Processing and Properties of Superalloys,” Heat Resistant Materials-ASM Specialty Handbook, ed. J.R. Davis (Materials Park, OH: ASM International, 1997), pp. 221–254.
“Directionally Solidified and Single Crystal Superalloys,” Heat Resistant Materials-ASM Specialty Handbook, ed. J.R. Davis (Materials Park, OH: ASM International, 1997), pp. 255–271.
D.N. Duhl, Superalloys II, ed. C.T. Sims, N.S. Stoloff, and W.C. Hagel (New York: Wiley and Sons, 1987), pp. 198–200.
G.L. Erickson, Materials Science and Engineering (Warrendale, PA: TMS, 1995), p. 36.
M. Durand-Charee, The Microstructure of Superalloys (New York: Gordon and Breach Science Publishers, 1997), p. 60.
F.J. Fela (Master’s Thesis, University of Florida, Gainesville, FL, 2000).
G.E. Fuchs, “Solution Heat Treatment Response of a Third Generation Single Crystal Ni-base Superalloy,” Mater. Sci. Eng., A300 (2001), pp. 52–60.
T. Khan and P. Caron, “Advanced Single Crystal Ni-base Superalloys,” Advances in High Temperature Structural Materials and Protective Coatings, ed. A.K. Koul et al. (Ottawa, Canada: NRC of Canada, 1994).
W.S. Walston, J.C. Shaeffer, and W.H. Murphy, “A New Type of Microstructural Instability in Superalloys-SRZ,” Superalloys 1996, ed. R.D. Kissinger et al. (Warrendale, PA: TMS, 1992), pp. 9–18.
E.W. Ross and K.S. O’Hara, “René N4: A First Generation Single Crystal Turbine Airfoil with Improved Oxidation Resistance, Low Angle Boundary Strength and Superior Long Time Rupture Strength,” Superalloys 1996, R.D. Kissinger et al. (Warrendale, PA: TMS, 1992), pp. 19–25.
S.T. Wlodek, “The Stability of Superalloys,” Long Term Stability of High Temperature Materials, ed. G.E. Fuchs, K.A. Dannemann, and T.C. Deragon (Warrendale, PA: TMS, 1996), pp. 3–40.
Author information
Authors and Affiliations
Additional information
For more information, contact G.E. Fuchs, University of Florida, Department of Materials Science and Engineering, P.O. Box 116400, Gainesville, FL 32611-6400.
Rights and permissions
About this article
Cite this article
Wilson, B.C., Hickman, J.A. & Fuchs, G.E. The effect of solution heat treatment on a single-crystal Ni-based superalloy. JOM 55, 35–40 (2003). https://doi.org/10.1007/s11837-003-0158-z
Issue Date:
DOI: https://doi.org/10.1007/s11837-003-0158-z