Abstract
Inconel 718 superalloy is one kind of important metallic materials used for manufacturing turbine discs in aero-engine. Since the turbine disc usually bears overloading which will lead to the low cycle fatigue (LCF) damage in real working, and because it is added with high ratio alloying elements, it is meaningful to decide the relationship between the LCF degradation and microstructure evolution. In the present study, LCF behavior of Inconel 718 alloy during long-term aging was investigated. The microstructure evolutions of Inconel 718 alloy during long-term aging at 750 °C for 500, 100, 1500 and 2000 h, respectively and the influences of long-term aging on the LCF behavior were investigated. The results show that the size of γ″ phases increases and the volume fraction decreases with the increase of aging time, compared with the increase of both size and volume fraction of δ phases. Both the fatigue strength and fatigue life of the alloy decrease with the increase of aging time.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
Huang, Q.Y., Li, H.K.: Superalloy, pp. 1–10. Metallurgy Industry Press, Beijing (2000)
Medeiros, S.C., Prasad, Y.V.R.K., Frazier, W.G., Srinivasan, R.: Microstructural modeling of metadynamic recrystallization in hot working of IN 718 superalloy. Mater. Sci. Eng. A193, 198–207 (2003)
Tian, S.G., Wang, X., Xie, J., Liu, C., Guo, Z.G., Liu, J., Sun, W.R.: Characteristic and mechanism of phase transformation of GH4169G alloy during heat treatment. Acta Metall. Sin. 49, 845–852 (2013)
Zhang, H.Y., Zhang, S.H., Zhang, W.H., Cheng, M., Wang, Z.T.: The research on the optimization of the hot die forging of GH4169 turbine discs. J. Plast. Eng. 14, 69–75 (2007)
Yang, Y.R., Liang, X.F., Cai, B.C., Huang, F.X.: Effect of δ phase on stress-rupture properties of GH4169 alloy. J. Aeronaut. Mater. 16, 38–43 (1996)
Jiang, H.P.: Requirements and forecast of turbine disk materials. Gas Turbine Exp. Res. 15, 1–6 (2002)
Liu, F., Sun, W.R., Yang, S.L., Li, Z., Guo, S.R., Yang, H.C., Hu, Z.Q.: Effects of Al content on microstructure and stability of GH4169 nickle base alloy. Acta Metall. Sin. 44, 791–798 (2008)
Dong, J.X., Bai, Y.Q., Xu, Z.C., Xie, X.S., Zhang, S.H.: Microstructure of long time aging in GH4169 alloys. J. Univ. Sci. Tech. Beijing 15, 567–571 (1993)
Coffin, L.F.: Effects of frequency and environment on fatigue crack growth in A286 at 1100 F. In: Carden, A.E., McEvily, A.J., Wells, C.H. (eds.) Fatigue at Elevated Temperatures, pp. 112–122. ASTM, Baltimore (1973)
Gell, M., Leverantm, G.R.: Mechanisms of High Temperature Fatigue. In: Carden, A.E., McEvily, A.J., Wells, C.H. (eds.) Fatigue at Elevated Temperatures, pp. 37–67. ASTM, Baltimore (1973)
Coffin, L.F.: Some physical aspects of high-temperature, low-cycle fatigue. Soc. Mater. Sci. 21, 186–191 (1971)
Merrick, H.K.: The low cycle fatigue of three wrought nickel-base alloys. Metall. Trans. 5A, 891–897 (1974)
Fournier, D., Pineau, A.: Low cycle fatigue behavior of Inconel 718 at 298 K and 823 K. Metall. Trans. 8A, 1095–1105 (1977)
Day, M.F., Thyomas, G.B.: Microstructural assessment of fractional life approach to low-cycle fatigue at high temperatures. Met. Sci. 13, 25–33 (1979)
Antolovich, S.D., Liu, S., Baur, R.: Low cycle fatigue behavior of René 80 at elevated temperature. Metall. Trans. 12A, 476–481 (1981)
Yao, J., Guo, J.T., Yuan, C., Li, Z.J.: Low cycle fatigue behavior of cast nickel base superalloy K52. Acta Metall. Sin. 41, 357–362 (2005)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 Springer International Publishing AG, part of Springer Nature
About this paper
Cite this paper
Wang, L., An, Jl., Liu, Y., Song, X. (2019). Effects of Long-Term Aging on the Low-Cycle Fatigue Behavior of Inconel 718 Superalloy. In: Gdoutos, E. (eds) Proceedings of the First International Conference on Theoretical, Applied and Experimental Mechanics. ICTAEM 2018. Structural Integrity, vol 5. Springer, Cham. https://doi.org/10.1007/978-3-319-91989-8_6
Download citation
DOI: https://doi.org/10.1007/978-3-319-91989-8_6
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-91988-1
Online ISBN: 978-3-319-91989-8
eBook Packages: EngineeringEngineering (R0)