Material Identification and Safety Evaluation of Defective 15Cr1Mo1V Steel

  • Xianxi Xia
  • Guodong Zhang
  • Fei Xue
  • Qinzheng Ma
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)


Main steam pipe and reheat steam pipe of Russian unit boiler are mostly made of 15Cr1Mo1V steel. It is a common problem that a large number of inclusions defects were found in the pipeline overhaul census. In this paper 15Cr1Mo1V steel pipe containing defects was studied by material identification and safety assessment. The results showed that the pipe microstructure was bainite + ferrite + carbide particles, aging at level 3. There were a large number of string-like and granular inclusions inside the material, mainly composed of manganese sulfide inclusions. Minimum longitudinal impact energy and lateral impact energy were both at lower level. The pipe crack was exempt from fatigue fracture assessment. The pipeline creep loss was 0.616, pipeline fatigue loss was 2.23 × 10−6, the main loss of pipeline was creep damage, and therefore more attention should be paid to pipeline operating temperature and pressure in the follow-up operation to avoid over-temperature creep resulting in accelerated failure.


Inclusion defects Material identification Safety evaluation Life prediction 


  1. 1.
    R. Viswanathan, J. Stringer, Failure mechanisms of high temperature components in power plants. J. Eng. Mater. Technol. 122, 246–255 (2000)CrossRefGoogle Scholar
  2. 2.
    D. Jones, Creep failures of overheated boiler, superheater and reformer tubes. Eng. Fail. Anal. 11, 873–893 (2004)CrossRefGoogle Scholar
  3. 3.
    T.H. Hyde, A.A. Becker, W. Sun et al., Finite-element creep damage analyses of P91 pipes. Int. J. Press. Vessels Pip. 83(11–12), 853–863 (2006)CrossRefGoogle Scholar
  4. 4.
    Zhang Guodong, Zhou Changyu, Finite element simulations of welding residual stress and creep damage for welded joint. Acta Metall. Sin. 44(7), 848–852 (2008)Google Scholar
  5. 5.
    T.H. Hyde, W. Sun, Effect of bending load on creep failure behavior of a pressurised thick walled CrMoV pipe weldment. Int. J. Press. Vessels Pip. 79(5), 331–339 (2002)CrossRefGoogle Scholar
  6. 6.
    T.H. Hyde, W. Sun, J.A. Williams, Life estimation of pressurised pipe bends using steady-state creep reference rupture stresses. Int. J. Press. Vessels Pip. 79(12), 799–805 (2002)CrossRefGoogle Scholar
  7. 7.
    S. Khodamorad, D. Haghshenas Fatmehsari, H. Rezaie, A. Sadeghipour, Analysis of ethylene cracking furnace tubes. Eng. Fail. Anal. 21, 1–8 (2012)CrossRefGoogle Scholar
  8. 8.
    P. Auerkari, J. Salonen, S. Holmström, A. Laukkanen, J. Rantala, R. Nikkarila, Creep damage and long term life modelling of an X20 steam line component. Eng. Fail. Anal. 35, 508–515 (2013)CrossRefGoogle Scholar
  9. 9.
    X.H. Yang, N. Li, Z.H. Jin, T.J. Wang, A continuous low cycle fatigue damage model and its application in engineering materials. Int. J. Fatigue 19(10), 687–692 (1997)CrossRefGoogle Scholar
  10. 10.
    J.P. Jing, Y. Sun, S.B. Xia et al., A continuum damage mechanics model on low cycle fatigue life assessment of steam turbine rotor. Int. J. Press. Vessels Pip. 78(1), 59–64 (2001)CrossRefGoogle Scholar
  11. 11.
    G.D. Zhang, Y.F. Zhao, F. Xue et al., Creep–fatigue interaction damage model and its application in modified 9Cr–1Mo steel. Nucl. Eng. Des. 241(12), 4856–4861 (2011)CrossRefGoogle Scholar
  12. 12.
    Q. Jiang, J. Wang, Thermal Power Metal Materials Handbook (China Electric Power Press, Beijing, 2000)Google Scholar
  13. 13.
    DL/T654-2009, Thermal Power Life Assessment Technology GuidelinesGoogle Scholar
  14. 14.
    DL/T940-2005, Thermal power Plant Steam Pipe Life Assessment Technology GuidelinesGoogle Scholar
  15. 15.
    BS7910-2005, Guide to Methods for Assessing the Acceptability of Flaws in Metallic StructuresGoogle Scholar
  16. 16.
    GB/T19624-2004, The Safety Assessment of Containing Defects Pressure Vessels in ServiceGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Xianxi Xia
    • 1
  • Guodong Zhang
    • 1
  • Fei Xue
    • 1
  • Qinzheng Ma
    • 1
  1. 1.Suzhou Nuclear Power InstituteSuzhouChina

Personalised recommendations