Review of the initiation and arrest temperatures for delayed hydride cracking in zirconium alloys

Abstract

Based on Kim's delayed hydride cracking (DHC) model, this study reanalyzes the critical temperatures for DHC initiation and arrest in zirconium alloys that had previously been investigated with Puls DHC model. In an unratcheting thermal cycle where DHC crack tip hydrides were dissolved fully at the peak temperature, the DHC initiation was suppressed, which required a supercooling or ΔT from the terminal solid solubility for dissolution (TSSD) temperatures. At a hydrogen concentration as 7 ppm H, the DHC initiation temperatures coincided with the TSSD, which is in conflict with Puls' DHC model. In a ratcheting thermal cycle, where the hydrides precipitated at the DHC crack tip were not fully dissolved, the DHC initiation was enhanced, so as to require a lesser ΔT, compared to that of the unratcheting thermal cycle. Therefore, the DHC initiation temperatures are concluded to depend upon at what temperatures the hydrides can nucleate in the zirconium matrix with the supersaturated hydrogen concentration. The DHC arrest temperatures were governed by the critical supersaturated hydrogen concentration or ΔC regardless of the thermal cycle treatment, providing further supportive evidence that Kim's DHC model is feasible.

This is a preview of subscription content, access via your institution.

References

  1. 1.

    C. E. Coleman and J. F. R. Ambler,Review of coatings and corrosion 3, 105 (1979).

    CAS  Google Scholar 

  2. 2.

    S. Q. Shi, G. K. Shek, and M. P. Puls,J. nucl. mater. 218, 189 (1995).

    Article  ADS  CAS  Google Scholar 

  3. 3.

    M. P. Puls, L. A. Simpson, and R. Dutton,Fracture Problems and Solutions in the Energy Industry (ed., L. A. Simpson), p. 13, Pergamon Press, Oxford (1982).

    Google Scholar 

  4. 4.

    S. Q. Shi and M. P. Puls,J. nucl. mater. 219, 30 (1994).

    Google Scholar 

  5. 5.

    J. S. Schofield, E. C. Darby and C. F. Gee,ASTM, STP 1423, 339 (2002).

    Google Scholar 

  6. 6.

    Y. S. Kim, S. S. Kim, S. B. Ahn, and Y. M. Cheong,Goveming Factors for Delayed Hydride Cracking in Zr−2.5Nb Tubes, to have been presented at the 14th Symposium on Zirconium in the Nuclear Industry, ASTM, Stockholm, Sweden (2004).

  7. 7.

    Y. S. Kim,Met. Mater.-Int. 11, 29 (2005).

    Article  CAS  Google Scholar 

  8. 8.

    J. J. Kearns,J. nucl. mater. 292, 22 (1976).

    Google Scholar 

  9. 9.

    Z. L. Pan, I. G. Ritchie, and M. P. Puls,J. nucl. mater. 228, 227 (1996).

    Article  ADS  CAS  Google Scholar 

  10. 10.

    A. McMinn, E. C. Darby, and J. S. Schofield,ASTM STP 1354, 173 (2000).

    Google Scholar 

  11. 11.

    G. K. Shek, J. Cui, and V. Perovic,Overload Fracture of Flaw Tip Hydrides in Zr−2.5Nb Pressure Tubes, to have been presented at the 14th Symposium on Zirconium in the Nuclear Industry, ASTM, Stockholm, Sweden (2004).

  12. 12.

    J. F. R. Ambler,ASTM STP 824, 653 (1984).

    CAS  Google Scholar 

  13. 13.

    W. M. Small, J. H. Root, and D. Khatamian,J. nucl. mater. 256, 102 (1998).

    Article  ADS  CAS  Google Scholar 

  14. 14.

    C. D. Cann and A. Atrens,J. nucl. mater. 88, 42 (1980).

    Article  ADS  CAS  Google Scholar 

  15. 15.

    Y. S. Kim, Y. Perlovich, M. Isaenkova, S. S. Kim, and Y. M. Cheong,J. nucl. mater. 297, 292 (2001).

    Article  ADS  CAS  Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to Young Suk Team.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Team, Y.S., Choi, S.J. & Cheong, Y.M. Review of the initiation and arrest temperatures for delayed hydride cracking in zirconium alloys. Met. Mater. Int. 11, 39 (2005). https://doi.org/10.1007/BF03027482

Download citation

Keywords

  • delayed hydride cracking
  • DHC initiation and arrest temperatures
  • ratcheting thermal cycle
  • terminal solid solubility
  • hydrogen
  • zirconium alloys