Skip to main content
SpringerLink
Log in

Effects of laser heat treatment on the fracture morphologies of X80 pipeline steel welded joints by stress corrosion

  • Published:
International Journal of Minerals, Metallurgy, and Materials Aims and scope Submit manuscript

Abstract

The surfaces of X80 pipeline steel welded joints were processed with a CO2 laser, and the effects of laser heat treatment (LHT) on H2S stress corrosion in the National Association of Corrosion Engineers (NACE) solution were analyzed by a slow strain rate test. The fracture morphologies and chemical components of corrosive products before and after LHT were analyzed by scanning electron microscopy and energy-dispersive spectroscopy, respectively, and the mechanism of LHT on stress corrosion cracking was discussed. Results showed that the fracture for welded joints was brittle in its original state, while it was transformed to a ductile fracture after LHT. The tendencies of hydrogen-induced corrosion were reduced, and the stress corrosion sensitivity index decreased from 35.2% to 25.3%, indicating that the stress corrosion resistance of X80 pipeline steel welded joints has been improved by LHT.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. J.L. Zhou, X.G. Li, C.W. Du, Y. Pan, T. Li, and Q. Liu, Passivation process of X80 pipeline steel in bicarbonate solutions, Int. J. Miner. Metall. Mater., 18(2011), No. 2, p. 178.

    Article  Google Scholar 

  2. C.F. Dong, K. Xiao, Z.Y. Liu, W.J. Yang, and X.G. Li, Hydrogen induced cracking of X80 pipeline steel, Int. J. Miner. Metall. Mater., 17(2010), No. 5, p. 579.

    Article  Google Scholar 

  3. L.Y. Xu, H.Y. Jing, J. Cao, C.G. Li, and Y.H. Sun, H2S stress corrosion investigation of pipeline steel welded joints, Trans. Chin. Weld. Inst., 31(2010), No. 1, p. 12.

    Google Scholar 

  4. Z.Y. Liu, X.G. Li, C.W. Du, L. Lu, Y.R. Zhang, and Y.F. Cheng, Effect of inclusions on initiation of stress corrosion cracks in X70 pipeline steel in an acidic soil environment, Corros. Sci., 51(2009), No. 4, p. 895.

    Article  Google Scholar 

  5. Z.Y. Liu, X.G. Li, Y.R. Zhang, C.W. Du, and G.L. Zhai, Relationship between electrochemical characteristics and SCC of X70 pipeline steel in an acidic soil simulated solution, Acta Metall. Sin. Engl. Lett., 22(2009), No. 1, p. 58.

    Article  Google Scholar 

  6. Z.Y. Liu, X.G. Li, and Y.F. Cheng, In-situ characterization of the electrochemistry of grain and grain boundary of an X70 steel in a near-neutral pH solution, Electrochem. Commun., 12(2010), No. 7, p. 936.

    Article  Google Scholar 

  7. D.J. Kong, Y.Z. Wu, and D. Long, Stress corrosion of X80 pipeline steel welded joints by slow strain test in NACE H2S solutions, J. Iron Steel Res. Int., 20(2013), No. 1, p. 40.

    Article  Google Scholar 

  8. P. Liang, C.W. Du, X.G. Li, X. Chen, and Z. Liang, Effect of hydrogen on the stress corrosion cracking behavior of X80 pipeline steel in Ku’erle soil simulated solution, Int. J. Miner. Metall. Mater., 16(2009), No. 4, p. 407.

    Article  Google Scholar 

  9. M.W. Zhou and H. Yu, Effects of precipitates and inclusions on the fracture toughness of hot rolling X70 pipeline steel plates, Int. J. Miner. Metall. Mater., 19(2012), No. 9, p. 805.

    Article  Google Scholar 

  10. Z.Y. Liu, G.L. Zhai, C.W. Du, and X.G. Li, Stress corrosion behavior of X70 pipeline steel in simulated solution of acid soil, Acta Metall. Sin., 44(2008), No. 2, p. 209.

    Google Scholar 

  11. L.R. Goodman and P.M. Singh, Repassivation behavior of X65 pipeline steel in fuel grade ethanol and its implications for the stress corrosion cracking mechanism, Corros. Sci., 65(2012), p. 238.

    Article  Google Scholar 

  12. A.M. Zhao, Y. Wang, Y.L. Chen, D. Tang, X.T. Gao, and B.Q. Zuo, Precipitation behaviors of X80 acicular ferrite pipeline steel, Int. J. Miner. Metall. Mater., 18(2011), No. 3, p. 309.

    Article  Google Scholar 

  13. K. Zhang, M.H. Zhang, Z.H. Guo, N.L. Chen, and Y.H. Rong, A new effect of retained austenite on ductility enhancement in high-strength quenching-partitioning-tempering martensitic steel, Mater. Sci. Eng. A, 528(2011), No. 29–30, p. 8486.

    Article  Google Scholar 

  14. D.J. Kong, D. Long, Y.Z. Wu, and C.Z. Zhou, Effects of laser shock processing on stress corrosion of X80 pipeline steel welded joints, J. Build. Mater., 15(2012), No. 4, p. 484.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. College of Mechanical Engineering, Changzhou University, Changzhou, 213016, China

    De-jun Kong & Cun-dong Ye

Authors
  1. De-jun Kong
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Cun-dong Ye
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to De-jun Kong.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Kong, Dj., Ye, Cd. Effects of laser heat treatment on the fracture morphologies of X80 pipeline steel welded joints by stress corrosion. Int J Miner Metall Mater 21, 898–905 (2014). https://doi.org/10.1007/s12613-014-0987-5

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12613-014-0987-5

Keywords

Search

Navigation