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Microcrack closure phenomena for AI 2219-T851

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Abstract

The effect of maximum cyclic stress, σmax, on the closure behavior of surface microcracks is studied for Al 2219-T851 subjected to fatigue for fully reversed cyclic loading. The relationship between σmax and the crack closure stress σcc, is found to change as the noncrystallographic transgranular microcracks grow from intermetallic particles at the alloy surface (where they initiate) to the grain boundaries. After crack initiation, with crack lengths just slightly greater than the width of the intermetallics from which they have propagated, σcc is found to be independent of σmax· For longer microcracks with lengths of approximately the grain size, σcc∞ σmax. Crack closure mechanisms which can explain this behavior are discussed.

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References

  1. W. L. Morris and O. Buck:Met. Trans. A, 1977, vol. 8A, pp. 597–601.

    Article  CAS  Google Scholar 

  2. W. L. Morris:Met. Trans. A, 1977, vol. 8A, pp. 1079–85.

    Article  CAS  Google Scholar 

  3. W. L. Morris:Met. Trans. A, 1977, vol. 8A, pp. 589–96.

    Article  CAS  Google Scholar 

  4. W. L. Morris:Met. Trans. A, 1977, vol. 8A, pp. 1087–93.

    Article  CAS  Google Scholar 

  5. H. L. Ewalds and R. T. Furnée:Int. J. Fract., 1978, vol. 14, pp. R53–55.

    CAS  Google Scholar 

  6. W. Elber: STP 486, p. 230, ASTM, Philadelphia, 1971.

  7. W. L. Morris, O. Buck, and H. L. Marcus:Met. Trans. A, 1976, vol. 7A, pp. 1161–65.

    Article  CAS  Google Scholar 

  8. C. G. Bowles and J. Schijve:Int. J. Fract., 1973, vol. 9, pp. 171–79.

    Article  Google Scholar 

  9. M. A. Hempel:Fracture, p. 376, Technology Press, MIT, 1969.

    Google Scholar 

  10. J. R. Rice:Fatigue Crack Propagation, pp. 247–309, American Society for Testing and Materials, STP 415, Baltimore, MD, 1967.

    Google Scholar 

  11. A. E. Green and I. N. Sneddon:Proc. Cambridge Phil. Soc., 1950, vol. 46, pp. 159–64.

    Article  Google Scholar 

  12. K. D. Unangst, T. T. Shih, and R. P. Wei:Eng. Fract. Mech., 1977, vol. 9, pp. 725–34.

    Article  CAS  Google Scholar 

  13. C. K. Clarke and G. C. Cassait:Eng. Fract. Mech., 1977, vol. 9, pp. 675–88.

    Article  CAS  Google Scholar 

  14. D. L. Davidson:Int. J. Fract. II, 1975, p. 1047.

    Google Scholar 

  15. M. Clavel, D. Fournier, and A. Pineau:Met. Trans. A, 1975, vol. 6A, p. 2305.

    CAS  Google Scholar 

Download references

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Authors and Affiliations

  1. Rockwell International Science Center, 91360, Thousand Oaks, CA

    W. L. Morris (Member of Technical Staff)

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  1. W. L. Morris
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Morris, W.L. Microcrack closure phenomena for AI 2219-T851. Metall Trans A 10, 5–11 (1979). https://doi.org/10.1007/BF02686400

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  • DOI: https://doi.org/10.1007/BF02686400

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