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Fatigue Behavior of Thermal Barrier Coated DD6 Single Crystal Superalloy at 900 °C

  • Jianmin DongEmail author
  • Jiarong Li
  • Rende Mu
  • He Tian
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 217)

Abstract

Thermal barrier coatings (TBCs) were deposited on DD6 specimens with [001] orientation, and the TBCs coated DD6 specimens were exposed at 1150 °C for one hour. Then, both the TBCs coated and bared specimens were subjected to high-cycle fatigue (HCF) testing at 900 °C in ambient atmosphere. The results revealed that the HCF life decreased with increasing stress amplitude and the fatigue strength of the TBCs coated substrate was higher than that of the bared alloy. There are two main reasons for this phenomenon, one is because the coating can bear part of the load and make the specimens stronger and the other is the existence of residual compressive stresses. SEM and TEM were used to observe the microstructure near the fracture. For the TBCs coated alloy, many pores and cracks appeared at the bond coat after HCF test, and the fatigue cracks may be resulted from some of them. In the process of testing, the crack expanded to the substrate and propagated along {111} octahedral slip planes.

Keywords

Thermal barrier coatings DD6 Fatigue 

References

  1. 1.
    F.A. Zhao, H.Y. Xiao, Z.J. Liu et al., A DFT study of mechanical properties, thermal conductivity and electronic structures of Th-doped Gd2Zr2O7. Acta Mater. 121, 299–309 (2016)CrossRefGoogle Scholar
  2. 2.
    A.K. Ray, R.W. Steinbrech, Crack propagation studies of thermal barrier coatings under bending. J. Eur. Ceram. Soc. 19(12), 2097–2109 (1999)CrossRefGoogle Scholar
  3. 3.
    J.M. Luo, C.Y. Dai, Y.G. Shen et al., Elasto-plastic characteristics and mechanical properties of as-sprayed 8 mol% yttria-stabilized zirconia coating under nano-scales measured by nanoindentation. Appl. Surf. Sci. 309, 271–277 (2014)CrossRefGoogle Scholar
  4. 4.
    J. Wu, H.B. Guo, Y.Z. Gao et al., Microstructure and thermo-physical properties of yttria stabilized zirconia coatings with CMAS deposits. J. Eur. Ceram. Soc. 31(10), 1881–1888 (2011)CrossRefGoogle Scholar
  5. 5.
    H.B. Guo, H. Murakami, S. Kuroda, Effect of hollow spherical powder size distribution on porosity and segmentation cracks in thermal barrier coatings. J. Am. Ceram. Soc. 89(12), 3797–3804 (2006)CrossRefGoogle Scholar
  6. 6.
    Z.H. Xu, S.M. He, L.M. He et al., Novel thermal barrier coatings based on La2 (Zr0.7Ce0.3)2O7/8YSZ double-ceramic-layer systems deposited by electron beam physical vapor deposition. J. Alloys Compd. 509(11), 4273–4283 (2011)CrossRefGoogle Scholar
  7. 7.
    X.L. Chen, Y. Zhao, W.Z. Huang et al., Thermal aging behavior of plasma sprayed LaMgAl11O19 thermal barrier coating. J. Eur. Ceram. Soc. 31(13), 2285–2294 (2011)CrossRefGoogle Scholar
  8. 8.
    X. Zhou, Z.H. Xu, R.D. Mu et al., Thermal barrier coatings with a double-layer bond coat on Ni3Al based single-crystal superalloy. J. Alloys Compd. 591, 41–51 (2014)CrossRefGoogle Scholar
  9. 9.
    A.K. Ray, E.S. Dwarakadasa, D.K. Das et al., Fatigue behavior of a thermal barrier coated superalloy at 800°C. Mater. Sci. Eng. A 448(1–2), 294–298 (2007)CrossRefGoogle Scholar
  10. 10.
    A.K. Ray, D.K. Das, B. Venkataraman, Characterization of rupture and fatigue resistance of TBC superalloy for combustion liners. Mater. Sci. Eng. A 405(1–2), 194–200 (2005)CrossRefGoogle Scholar
  11. 11.
    Y. Itoh, M. Saitoh, Y. Ishiwata, Influence of high-temperature protective coatings on the mechanical properties of nickel-based superalloys. J. Mater. Sci. 34(16), 3957–3966 (1999)CrossRefGoogle Scholar
  12. 12.
    Y. Itoh, M. Saitoh, K. Takaki et al., Effect of high-temperature protective coatings on fatigue lives of nickel-based superalloys. Fatigue Fract. Eng. Mater. Struct. 24(12), 843–854 (2001)CrossRefGoogle Scholar
  13. 13.
    X.H. Liang, C.G. Deng, M. Liu et al., High cycle fatigue property of NiCoCrAIYTa coating prepared by low pressure plasma spraying on Ni-base single crystal super-alloy at high temperature. J. Therm. Spray Technol. 1(1), 34–38 (2009)Google Scholar
  14. 14.
    Z.X. Shi, J.R. Li, S.Z. Liu et al., High cycle fatigue behavior of the second generation single crystal superalloy DD6. Trans. Nonferrous Met. Soc. China 21(5), 998–1003 (2011)CrossRefGoogle Scholar
  15. 15.
    Z.X. Shi, S.Z. Liu, J.R. Li, Rejuvenation heat treatment of the second-generation single-crystal superalloy DD6. Acta Metall. Sin. (Engl. Lett.) 28(10), 1278–1285 (2015)CrossRefGoogle Scholar
  16. 16.
    Y. Liu, J.J. Yu, Y. Xu et al., High cycle fatigue behavior of a single crystal superalloy at elevated temperatures. Mater. Sci. Eng. A. 454–455, 357–366 (2007)CrossRefGoogle Scholar
  17. 17.
    J.M. Dong, J.R. Li, R.D. Mu et al., Effect of high temperature heat treatment on elements interdiffusion behavior and stress rupture characteristics of DD6 single crystal superalloy with thermal barrier coatings. J. Mater. Eng. 6, 51–55 (2014)Google Scholar
  18. 18.
    A.K. Ray, B. Goswami, M.P. Singh et al., Characterization of bond coat in a thermal barrier coated superalloy used in combustor liners of aero engines. Mater. Charact. 57(3), 199–209 (2006)CrossRefGoogle Scholar
  19. 19.
    A.K. Ray, J.D. Whittenberger, Stress rupture behavior of a thermal barrier coated AE 437A Ni-based superalloy used for aero turbine blades. Mater. Sci. Eng. A 509(1–2), 111–114 (2009)CrossRefGoogle Scholar
  20. 20.
    J.Z. Yi, C.J. Torbet, Q. Feng et al., Ultrasonic fatigue of a single crystal Ni-base superalloy at 1000°C. Mater. Sci. Eng. A 443(1–2), 142–149 (2007)CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Science and Technology on Advanced High Temperature Structural Materials LaboratoryBeijing Institute of Aeronautical MaterialsBeijingChina
  2. 2.Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation MaterialBeijing Institute of Aeronautical MaterialsBeijingChina

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