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Metallurgical Transactions

, Volume 5, Issue 11, pp 2439–2450 | Cite as

Intergranular embrittlement of iron-carbon alloys by impurities

  • J. B. Rellick
  • C. J. McMahon
Mechanical Behavior

Abstract

It is shown that plain Fe-C alloys can be embrittled by certain heat treatments if they are doped with Sb, Sn, As or P. Embrittlement occurs when these elements are rejected from precipitating carbides during cooling, and it results from a piling-up of the elements ahead of the carbide and the concomitant lowering of cohesion along the carbide-ferrite interface. It is a transient (non-equilibrium) condition and disappears upon continued holding at elevated temperatures. Embrittlement by equilibrium segregation of these impurities in unalloyed ferrite apparently does not occur. A model for this transient embrittlement is proposed and tested. This model is relevant to the phenomenon of “500°F” embrittlement in alloy steels, and it is also consistent with most aspects of temper embrittlement.

Keywords

Carbide Ferrite Austenite Metallurgical Transaction Cementite 
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.

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References

  1. 1.
    J. R. Low, Jr.: inFracture of Engineering Materials, p. 127, ASM, 1964.Google Scholar
  2. 2.
    C. J. McMahon, Jr.: inTemper Embrittlement of Steel, p. 127, ASTM STP 407, ASTM, Philadelphia, 1968.Google Scholar
  3. 3.
    J. M. Capus:Rev. Met., 1959, vol. 56, p. 181.Google Scholar
  4. 4.
    E. B. Kula and A. A. Anctil:J. Mater. ASTM, 1969, vol. 4, p. 817.Google Scholar
  5. 5.
    H. R. Tipler: International Conference on the Properties of Creep Resistant Steels, Dusseldorf, May 1972.Google Scholar
  6. 6.
    M. A. Grossman:Trans. AIME, 1946, vol. 167, p. 39.Google Scholar
  7. 7.
    J. H. Bucher, G. W. Powell, and J. W. Spretnak:Applications of Fracture Toughness Parameters to Structural Metals, p. 323, H. D. Greenberg, ed., Gordon and Breach, New York, 1966.Google Scholar
  8. 8.
    K. Balajiva, R. M. Cook, and D. K. Worn:Nature, 1956, vol. 178, p. 433.CrossRefGoogle Scholar
  9. 9.
    W. Steven and K. Balajiva:J.Iron Steel Inst., 1959, vol. 193,p. 141.Google Scholar
  10. 10.
    J. R. Low, Jr., D. F. Stein, A. M. Turkalo, and R. P. Laforce:Trans. TMS- AIME, 1968, vol. 242 p. 14.Google Scholar
  11. 11.
    B. J. Schulz and C. J. McMahon, Jr.:Temper Embrittlement of Alloy Steels, p. 104, ASTM STP 499, ASTM, Philadelphia, 1972.Google Scholar
  12. 12.
    D. F. Stein, A. Joshi, and R. P. Laforce:Trans. ASM, 1969, vol. 62, p. 776.Google Scholar
  13. 13.
    H. L. Marcus and P. W. Palmberg:Trans. TMS-AIME, 1969, vol. 245, p. 1664.Google Scholar
  14. 14.
    R. Viswanathan:Met. Trans., 1971, vol. 2, p. 809.Google Scholar
  15. 15.
    H. Ohtani, H. C. Feng, and C. J. McMahon, Jr.:Met. Trans., 1974, vol. 5, p. 516.Google Scholar
  16. 16.
    C. L. Smith and J. R. Low, Jr.:Met. Trans., 1974, vol. 5, p. 279.Google Scholar
  17. 17.
    M. Guttmann, P. R. Krahe, F. Abel, G. Amsel, M. Brunhaux, and C. Cohen:Scripta Met., 1971, vol. 5, p. 479.CrossRefGoogle Scholar
  18. 18.
    A. Preece and R. D. Carter:J. Iron Steel Inst., 1953, vol. 173, p. 387.Google Scholar
  19. 19.
    G. Vidal:Rev. Met., 1945, vol. 42, p. 149.Google Scholar
  20. 20.
    L. D. Jaffe and D. C. Buffam:Trans. AIME, 1949, vol. 180, p. 513.Google Scholar
  21. 21.
    B. J. Schulz: Ph.D. Dissertation, University of Pennsylvania, 1972.Google Scholar
  22. 22.
    A. E. Powers:Trans. ASM, 1956, vol. 48, p. 149.Google Scholar
  23. 23.
    R. O. Ritchie and J. F. Knott:Proc. of Conference on Mechanics and Mechanisms of Crack Growth, Cambridge. British Steel Corp. Physical Metallurgy Centre, Moorgate, Rotherham, 1973, paper no. 12.Google Scholar
  24. 24.
    R. L. Rickett and J.M. Hodge:Proc. ASTM, 1951, vol. 51, p. 931.Google Scholar
  25. 25.
    J. M. Capus:J. Iron Steel Inst., 1963, vol. 201, p. 53.Google Scholar
  26. 26.
    L. J. Klingler, W. J. Bamett, R. P. Frohmberg, and A. R. Troiano:Trans. ASM, 1954, vol. 46, p. 1557.Google Scholar
  27. 27.
    B. S. Lement, B. L. Averbach, and M. Cohen:Trans. ASM, 1954, vol. 46, p. 851.Google Scholar
  28. 28.
    K. Kuo:J. Iron Steel Inst., 1953, vol. 173, p. 363.Google Scholar
  29. 29.
    P. A. Restaino and C. J. McMahon, Jr.:Trans. ASM, 1967, vol. 60, p. 699.Google Scholar
  30. 30.
    C. J. McMahon, Jr., J. R. Rellick, and B. J. Schulz: inFracture 1969, P. L. Pratt, ed., Chapman and Hall, London, 1969, p. 278.Google Scholar
  31. 31.
    J. R. Rellick: Ph.D. Dissertation, University of Pennsylvania, 1972.Google Scholar
  32. 32.
    C. J. McMahon, Jr. and M. Cohen:Acta Met., 1965, vol. 13, p. 591.CrossRefGoogle Scholar
  33. 33.
    H. Hanemann and A. Schrader:Atlas Metallographicus, vol. 1, p. 86, Verlag von Gebruder Borntraeger, Berlin, 1933.Google Scholar
  34. 34.
    G. A. Bruggeman:Diffusion Data, 1968, vol. 2, p. 286.Google Scholar
  35. 35.
    M. Hansen and K. Anderko:Constitution of Binary Alloys, 2nd Edition, McGraw-Hill, New York, 1958; R. P. Elliot, First Supplement 1965; F. A. Shunk, Second Supplement, 1969.Google Scholar
  36. 36.
    H. I. Aaronson, H. A. Domian, and G. M. Pound:Trans. TMS-AIME, 1966, vol. 236, p. 768.Google Scholar
  37. 37.
    D. E. Coates:Met. Trans., 1972, vol. 3, p. 1203.Google Scholar
  38. 38.
    J. B. Gilmour, G. R. Purdy, and J. S. Kirkaldy:Ibid, p. 1455.Google Scholar
  39. 39.
    M. Hillert: inThe Mechanism of Phase Transformations in Crystalline Solids, 1969, Inst. of Metals Monograph No. 33, p. 231.Google Scholar
  40. 40.
    H. I. Aaronson and H. A. Domian:Trans. TMS-AIME, 1966, vol. 236, p. 781.Google Scholar
  41. 41.
    G. R. Purdy, D. H. Weichert, and J. S. Kirkaldy:Trans. TMS-AIME, 1964, vol. 230, p. 1025Google Scholar
  42. 42.
    M. L. Picklesimer, D. L. McElroy, T. M. Kegley, Jr., E. E. Stansbury, and J. H. Frye, Jr.:Trans. TMS-AIME, 1960, vol. 218, p. 473.Google Scholar
  43. 43.
    A. Hultgren:Kungl. Svenska Vetenskapsakademiens Handlingar, Fjarde Serien., Band 4, no. 3, 1953.Google Scholar
  44. 44.
    R. W. Heckel and H. W. Paxton:Trans. TMS-AIME, 1960, vol. 218, p. 799.Google Scholar
  45. 45.
    L. S. Darken:Trans. TMS-AIME, 1961, vol. 221, p. 654.Google Scholar
  46. 46.
    M. Nageswararao, C. J. McMahon, Jr., and H. Herman:Met. Trans., 1974, vol. 5, p. 1061.Google Scholar
  47. 47.
    C. Zener:J. Appl. Phys., 1949, vol. 20, p. 950.CrossRefGoogle Scholar
  48. 48.
    J. Chipman:Met. Trans., 1972, vol. 3, p. 55.Google Scholar
  49. 49.
    P. L. Gruzin and V. V. Minal:Ft. Met. Metalov., 1963, vol. 16, no. 4, p. 551.Google Scholar
  50. 50.
    K. Kuo and A. Hultgren:Jemkontorets Ann., 1951, vol. 135, p. 452.Google Scholar
  51. 51.
    H. R. Tipler: N.P.L., Teddington, Middlesex, U. K. unpublished work.Google Scholar
  52. 52.
    R. Bruscato:Weld. J. Res. Suppl., 1970, vol. 49, p. 148-S.Google Scholar
  53. 53.
    G. A. Bruggeman and E. B. Kula: Private Communication.Google Scholar

Copyright information

© American Society for Metals, The Melallurgical Society of AIME 1974

Authors and Affiliations

  • J. B. Rellick
    • 1
  • C. J. McMahon
    • 2
  1. 1.Experimental StationE. I. DuPont Co.Wilmington
  2. 2.Dept. of Metallurgy and Materials ScienceUniversity of PennsylvaniaPhiladelphia

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