Abstract
Rejuvenation of Ni-based superalloy gas turbine blades is widely and successfully employed in order to restore the material microstructure and properties after service at high temperature and stresses. Application of hot isostatic pressing (HIP) and re-heat treatment can restore even a severely overaged blade microstructure to practically “as-new” condition. However, certain service-induced microstructural changes might affect an alloy’s behavior after the rejuvenated blades are returned to service. It was found that advanced service-induced decomposition of primary MC carbides, and the consequent changes of the γ-matrix chemical composition during the rejuvenation, can cause a considerable acceleration of the aging process in the next service cycle. The paper will discuss the influence of the previous microstructural deterioration on the aging kinetics of rejuvenated gas turbine blades made from IN-738 and conventionally cast GTD-111 alloys.
Similar content being viewed by others
![](https://media.springernature.com/w215h120/springer-static/image/art%3A10.1007%2Fs11665-019-03994-4/MediaObjects/11665_2019_3994_Fig1_HTML.png)
References
R.A. Stevens and P.E.J. Flewitt: J. Mater. Sci., 1978, vol. 13, pp. 367–76.
R.A. Stevens and P.E.J. Flewitt: Mater. Sci. Eng., 1979, vol. 37, pp. 237–47.
R. Castillo and A.K. Koul: Proc. Conf. “High Temperature Alloys for Gas Turbines and Other Applications,” Liege, Belgium, Oct. 6–9, 1986, pp. 1395–1410.
E.W. Ross and C.T. Sims: in Superalloys II. C.T. Sims, N.S. Stoloff, and W.C. Hagel, eds., John Wiley & Sons, New York, NY, 1984, pp. 112–16.
A.K. Koul and R. Castillo: Proc. ASM 1993 Materials Congr., Materials Week ’93, Pittsburgh, PA, Oct. 17–21, 1993, ASM International, Materials Park, OH, 1994, pp. 75–88.
H.M. Tawancy, N.M. Abbas, A.I. Al-Mana, and T.N. Rhys-Jones: J. Mater. Sci., 1994, vol. 29, pp. 2445–58.
Huang Xuebing, Kang Yan, Zhou Huihua, Zhang Yun, and Hu Zhuangqi: Mater. Lett., 1998, vol. 36, pp. 210–13.
J.A. Daleo and J.R. Wilson: J. Eng. Gas Turbines and Power, 1998, vol. 120, ASME paper no. 96-GT-520.
R.A. Stevens and P.E.J. Flewitt: Strength of the Metals and Alloys, 5th Int. Conf., Aachen, Germany, Aug. 27–31, 1979, Pergamon Press, Elmsford, NY, 1979, vol. 1, pp. 439–44.
J.C. Beddoes and W. Walace: Metallography, 1980, vol. 13, pp. 185–94.
P.H. Floyd, W. Wallace, and J.-P.A. Immarigeon: Proc. Conf. “Heat Treatment ’81,” Birmingham, England, Sept. 15–16, 1981, The Metals Society, London, 1983, pp. 97–102.
A.K. Koul and R. Castillo: Metall. Trans. A, 1988, vol. 19A, pp. 2049–66.
W.B. Busch and J. Wortmann: Proc. Conf. “Material Development in Turbo-Machinery Design,” Cambridge, United Kingdom, Sept. 12–14, 1988, The Institute of Metals, London, 1989, pp. 151–57.
T.M. Maccagno, A.K. Koul, J.-P. Immarigeon, L. Cutler, R. Allem, and G. L’Esperance: “Rejuvenation of Service Exposed Alloy 713C Turbine Blades,” Report of National Aeronautical Establishment, National Research Council, Ottawa, Ontario, Canada, July 26, 1989.
A. Baldan: Proc. Conf. “Materials Aging and Component Life Extension,” Milan, Italy, Oct. 10–13, 1995, Engineering Materials Advisory Services Ltd., United Kingdom, 1995, vol. II, pp. 943–50.
J. Hakl, V. Bina, J. Kudrman, and R. Pech: Proc. Conf. “Materials Aging and Component Life Extension,” Milan, Italy, Oct. 10–13, 1995, Engineering Materials Advisory Services Ltd., United Kingdom, 1995, vol. II, pp. 991–1000.
Aerospace Structural Metals Handbook, CINDAS/USAF CRDA Handbooks Operation, Purdue University, West Lafayette, IN, 1998, vol. 5.
Atlas of Creep and Stress-Rupture Curves, ASM International, Materials Park, OH, 1998.
Heat-Resistant Materials, ASM International, Materials Park, OH, 1997.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Lvova, E., Norsworthy, D. Influence of service-induced microstructural changes on the aging kinetics of rejuvenated Ni-based superalloy gas turbine blades. J. of Materi Eng and Perform 10, 299–312 (2001). https://doi.org/10.1361/105994901770345015
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1361/105994901770345015