Effect of Hydrogen in Plastic Zones of Single-Edge Notch HSLA Samples

  • I. R. Harvey
  • J. G. Byrne


Hydrogen embrittlement has caused many service failures in linepipe steel. Service conditions present several avenues by which hydrogen can adversely affect the mechanical properties of such steel. Fesseler [1] reported that local mechanical damage can arise from handling and laying of pipe and that some cathodic protection schemes can in fact inject dangerous amounts of hydrogen into a steel. There can be synergism between these two aspects which can give extremely high hydrogen charging conditions resulting in failure [2]. Metallurgists in the oil and gas industries refer to this type of failure as hydrogen stress cracking (HSC). Future synthetic natural gas from coal gasification may contain as much as 50% H2 which will be very deleterious to linepipe properties. Sulfides present in natural gas, hydrogen sulfide or carbon disulfide, tend to inhibit the recombination of 2HADS → H2 and therefore favor atomic hydrogen absorption into a steel [3]. Welding of linepipe is a potential source of nearly every known hydrogen problem depending on the circumstances of the technique [4]. Thus it is apparent that NDE techniques adaptable to field use will be important to the maintenance of thousands of miles of existing and future pipelines. The particular use of positron annihilation to be described could be one such technique.


Plastic Zone Hydrogen Embrittlement Positron Annihilation Plastic Zone Size Hydrogen Charge 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    R. R. Fesseler, 6th Symposium on Line Pipe Research, American Gas Association, Arlington, Virginia, 1979, Catalog No. 30175.Google Scholar
  2. 2.
    H. J. Cialone and D. N. Williams, Vol. 2, Sixth Biennial Joint Technical Meeting on Line Pipe Research, Genova, Italy, 24–25 Sept. 1985.Google Scholar
  3. 3.
    H. H. Uhlig and R. W. Revie, Corrosion and Corrosion Control, 3rd edition, John Wiley and Sons, New York (1985), 48, 58, 142, 226.Google Scholar
  4. 4.
    A. R. Troiano, Proc. Intl. Conf. on Effects of Hydrogen on Materials Properties and Selection and Structural Design, Champion, Pennsylvania, Sept. 1973, pp. 3–15.Google Scholar
  5. 5.
    F. Alex, T. D. Hadnagy, K. G. Lynn, and J. G. Byrne, Proc. Intl. Conf. on Effect of Hydrogen on the Behavior of Materials, A. W. Thompson and I. M. Berenstein, eds., Met. Soc. of AIME, New York (1976), p. 642.Google Scholar
  6. 6.
    Po-We Kao, R. W. Ure, and J. G. Byrne, Phil. Mag., A39, 517 (1979).Google Scholar
  7. 7.
    Z. Tian, X. R. Chang, R. B. Lu, and C. M. Hsiao, Scripta Met., 16, 1383 (1982).CrossRefGoogle Scholar
  8. 8.
    Yi Pan and J. G. Byrne, Rev. of Progress in Quantitative NDE, Vol. 6B, eds. D. O. Thompson and D. E. Chimenti, Plenum Pubi. Co. (1987), pp. 1633–1640.Google Scholar
  9. 9.
    D. T. Peterson, M.S. Thesis, University of Utah, 1988.Google Scholar
  10. 10.
    I. R. Harvey, M. S. Thesis, University of Utah, 1987.Google Scholar
  11. 11.
    R. W. Hertzberg, Deformation and Fracture Mechanics of Engineering Materials, 2nd edition, John Wiley and Sons, New York, 1983, 252–275; 281–295.Google Scholar
  12. 12.
    G. T. Hahn and A. R. Rosenfield, Acta Met., 13 (1965), 293.CrossRefGoogle Scholar
  13. 13.
    T. Asaoka, Intl. Symp. on Metal-Hydrogen Systems, Miami Beach, Florida, April 1981, 197–209.Google Scholar
  14. 14.
    F. Alex and J. G. Byrne, Materials Research Bulletin, 14 (1979), 821.CrossRefGoogle Scholar
  15. 15.
    F. Alex, Ph.D. Thesis, University of Utah, 1976.Google Scholar
  16. 16.
    O. A. Onyevuenyi and J. P. Hirth, Scripta Met., 115 (1981), 113.CrossRefGoogle Scholar
  17. 17.
    E. Lunarska, in Hydrogen Degradation of Ferrous Alloys, edited by R. A. Oriani, J. P. Hirth, and M. Smialowski, Noyes Publications, Park Ridge, New Jersey, 1985, p. 712.Google Scholar
  18. 18.
    J. C. M. Li, C. G. Park, and S. M. Ohr, Scipta Met., 20 (1986), 371.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1989

Authors and Affiliations

  • I. R. Harvey
    • 1
  • J. G. Byrne
    • 1
  1. 1.Department of Metallurgy and Metallurgical EngineeringUniversity of UtahSalt Lake CityUSA

Personalised recommendations