Metallurgical Transactions A

, Volume 9, Issue 7, pp 917–925 | Cite as

Fatigue behavior of a nial precipitation hardening medium carbon steel

  • M. C. Mataya
  • R. A. Fournelle
Mechanical Behavior
Received:

Abstract

The fatigue behavior of an Fe-0.30C-4.48Ni-l.32Al steel tempered to give three different microstructures of the same ultimate tensile strength has been investigated by light and electron microscopy, low and high cycle fatigue tests, X-ray line broadening and stress relaxation measurements. The three different heat treatments produced the following structures: I) a conventional quenched and tempered microstructure with a high density of dislocations and elongated carbides, II) a microstructure of high dislocation density, coarse carbides and fine coherent NiAl precipitates and III) a highly tempered micro-structure with a recovered dislocation substructure, coarse carbides and fine coherent NiAl precipitates. In low cycle, strain controlled fatigue cyclic softening in Treatment I was accompanied by a rearrangement of the dislocation substructure and a reduction in both the internal stress and lattice microstrain. Treatment II, which remained cyclically stable during the initial portion of the fatigue life, showed little change in the internal stress and dislocation density and showed a slight increase in lattice microstrain. Treat-ment III, which initially cyclically hardened, exhibited a rise in internal stress, lattice microstrain and dislocation density. The behavior of Treatments II and III is attributed in part to the presence of the fine NiAl precipitates which appear to reduce the tendency of the transformation induced dislocation substructure to rearrange itself into a cell structure during fatigue. In high cycle, stress controlled fatigue Treatment II showed the best fatigue resistance and Treatment I the worst. Improvement in life was attributed to improved resistance to crack initiation.

Keywords

Fatigue Fatigue Life Strain Amplitude Cycle Fatigue High Cycle Fatigue 
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.
This is a preview of subscription content, log in to check access.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    R. W. Landgraf: T. & A.M. Report No. 320, Dept. of Theoretical and Applied Mechanics, Univ. of IIIinois, 1968.Google Scholar
  2. 2.
    R. W. Landgraf, M. R. Mitchell, and N. R. LaPointe:Monotonic and Cyclic Properties of Engineering Materials, Metallurgy Dept., Ford Scientific Re- search Staff, Dearborn, Michigan, June 1972.Google Scholar
  3. 3.
    P. N. Thielen, M. E. Fine, and R. A. Fournelle:ActaMet., 1976, vol. 24, p. 1.Google Scholar
  4. 4.
    R. A. Fournelle, E. A. Grey, and M. E. Fine:Met. Trans. A, 1976, vol. 7A, p. 669.CrossRefGoogle Scholar
  5. 5.
    D. T. Raske and J. D. Morrow:Manual on Low Cycle Fatigue Testing, ASTM STP465, p. 1, Amer. Soc. Test. Mater., 1969.Google Scholar
  6. 6.
    D. T. Peterson and R. L. Skaggs:Trans. TMS-AIME, 1968, vol. 242, p. 922.Google Scholar
  7. 7.
    D. J. White and M. Radomski:J. Strain Anal., 1968, vol. 3, p. 313.CrossRefGoogle Scholar
  8. 8.
    P. K. Das, D. C. Chandler, and B. K. Foster:Trans. ASME, 1973, vol. 95, ser. H, p. 161.Google Scholar
  9. 9.
    A. R. Stokes:Proc. Phy. Soc. (London), 1948, vol. A61, p. 382.CrossRefGoogle Scholar
  10. 10.
    B. E. Warren and B. L. Averbach:J. Appl Phys., 1950, vol. 21, p. 595.CrossRefGoogle Scholar
  11. 11.
    G. C. Gould and H. J. Beattie:Trans. TMS-AIME, 1961, vol. 221, p. 893.Google Scholar
  12. 12.
    M. Kanao, T. Araki, H. Numata, and T. Aoki:J. Iron Steel Inst. Jap., 1968, vol. 54, p. 967.Google Scholar
  13. 13.
    S. C. Kolesar: Ph.D. Thesis, Northwestern University, Evanston, Hlinois, 1971.Google Scholar
  14. 14.
    D. Kuhlman-Wilsdorf and C. Laird:Mater. Sci Eng., 1977, vol. 27, p. 137.CrossRefGoogle Scholar
  15. 15.
    R. M. Jamieson and J. E. Hood:J. Iron Steel Inst., 1971, vol. 209, p. 46.Google Scholar
  16. 16.
    J. D. Embury:Strengthening Methods in Crystals, p. 353, Applied Science Publishers Ltd., England, 1971.Google Scholar
  17. 17.
    D. V. Wilson:Acta Met., 1965, vol. 13, p. 807.CrossRefGoogle Scholar
  18. 18.
    C. E. Feltner and P. Beardmore:Achievement of High Fatigue Resistance in Metals and Alloys, ASTM STP467, p. 77, Amer. Soc. Test. Mater., 1970.Google Scholar
  19. 19.
    C. H. Wells and C. P. Sullivan:Trans. ASM, 1964, vol. 57, p. 841.Google Scholar
  20. 20.
    J. T. McGrath and W. J. Bratina:Acta Met., 1967, vol. 15, p. 329.CrossRefGoogle Scholar
  21. 21.
    C. Calabrese and C. Laird:Mater. Sci Eng., 1974, vol. 13, p. 141.CrossRefGoogle Scholar

Copyright information

© American Society for Metals and the Metallurgical Society of AIME 1978

Authors and Affiliations

  • M. C. Mataya
    • 1
  • R. A. Fournelle
    • 2
  1. 1.Atomics International DivisionRockwell InternationalGolden
  2. 2.Department of Mechanical EngineeringMarquette UniversityMilwaukee

Personalised recommendations