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Fatigue Crack Initiation Mechanism for Cast 319-T7 Aluminum Alloy

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Abstract

In this study, the fatigue crack initiation behavior of cast 319-T7 aluminum alloy at 25 °C and 150 °C was examined based on detailed scanning electron microscopy (SEM) fractographic analysis. The stress-life (S-N) type, uniaxial fatigue tests were conducted for the 319-T7 specimen at a stress ratio (R) of −1 and at 25 °C and 150 °C, and the fractographs of all the fatigued specimens were documented using SEM. At 25 °C, all the fatigue cracks for the specimens initiated from porosity located at or near the specimen surface. At 150 °C, the fatigue crack initiation occurred at porosities near surface for 11 out of 29 specimens. For those specimens with relatively small or no porosities near surface and fatigued at 150 °C, the fatigue crack initiation by slip band mechanism tended to occur and coarse transgranular facets were observed. The oxide film was often observed on the coarse transgranular facet for the those specimens using the slip band mechanism. The fatigue crack initiation mechanism for cast 319-T7 alloy at 25 °C and 150 °C was proposed based on extensive fractographic analysis results.

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References

  1. ASM Handbook: Fatigue and Fracture, 4th ed., ASM INTERNATIONAL, Materials Park, OH, 2005, vol. 19, pp. 813–22.

  2. J.M. Boileau and J.E. Allison: Metall. Mater. Trans. A, 2003, vol. 34A, pp. 1807–20.

    Article  CAS  Google Scholar 

  3. C. Nyahumwa, N.R. Green, and J. Campbell: Metall. Mater. Trans. A, 2001, vol. 32A, pp. 349–58.

    Article  CAS  Google Scholar 

  4. J.-Y. Buffière, S. Savelli, P.H. Jouneau, E. Maire, and R. Fougères: Mater. Sci. Eng. A, 2001, vol. A316, pp. 115–26.

    Google Scholar 

  5. M.J. Couper, A.E. Neeson, and J.R. Griffiths: Fatigue Fract. Eng. Mater. Struct., 1990, vol. 13, pp. 213–27.

    Article  Google Scholar 

  6. Q.G. Wang, D. Apelian, and D.A. Lados: J. Light Met., 2001, vol. 1, pp. 73–84.

    Article  CAS  Google Scholar 

  7. M.J. Caton, J.W. Jones, H. Mayer, S. Stanzl-Tschegg, and J.E. Allison: Metall. Mater. Trans. A, 2003, vol. 34A, pp. 33–41.

    Article  CAS  Google Scholar 

  8. M.J. Caton, J.W. Jones, J.M. Boileau, and J.E. Allison: Metall. Mater. Trans. A, 1999, vol. 30A, pp. 3055–68.

    Article  CAS  Google Scholar 

  9. Y.H. Jang, Y.I. Jeong, C.G. Yoon, and S.S. Kim: Metall. Mater. Trans. A, 2009, vol. 40A, pp. 1090–99.

  10. H. Jiang, P. Bowen, and J.F. Knott: J. Mater. Sci., 1999, vol. 34, pp. 719–25.

    Article  CAS  Google Scholar 

  11. M.R. Bayoumi and A.K. Abdellatif: Eng. Fract. Mech., 1995, vol. 51, pp. 861–70.

    Article  Google Scholar 

  12. J.G. Kaufman and E.L. Rooy: Aluminum Alloy Castings, ASM INTERNATIONAL, Materials Park, OH, 1993, pp. 92–101.

    Google Scholar 

  13. Q.G. Wang, C.J. Davidson, J.R. Griffiths, and P.N. Crepeau: Metall. Mater. Trans. B, 2006, vol. 37B, pp. 887–95.

    Article  ADS  CAS  Google Scholar 

  14. U. Krupp: Fatigue Crack Propagation in Metals and Alloys, Wiley-VCH, New York, NY, 2007, pp. 104–07.

    Book  Google Scholar 

  15. D.K. Xu, L. Liu, Y.B. Xu, and E.H. Han: Scripta Mater., 2007, vol. 56, pp. 1–4.

    Article  CAS  Google Scholar 

  16. Y. Murakami and M. Endo: Fatigue, 1994, vol. 16, pp. 163–82.

    Article  CAS  Google Scholar 

  17. Q.G. Wang and P.E. Jones: Metall. Mater. Trans. B, 2007, vol. 38B, pp. 615–21.

    Article  ADS  CAS  Google Scholar 

  18. M.J. Caton, Ph.D. Thesis, University of Michigan, Ann Arbor, MI, 2001.

  19. Q.G. Wang, D. Apelian, and D.A. Lados: J. Light Met., 2001, vol. 1, pp. 85–97.

    Article  Google Scholar 

  20. X. Zhu, A. Shyam, J.W. Jones, H. Mayer, J.V. Lasecki, and J.E. Allison: Int. J. Fatigue, 2006, vol. 28, pp. 1566–71.

    Article  MATH  CAS  Google Scholar 

  21. P.F. Thomason: Ductile Fracture of Metals, Pergamon Press, Oxford, UK, 1989, pp. 103–11.

    Google Scholar 

Download references

Acknowledgment

This work was financially supported by Korea Research Foundation Grant No. KRF-2008-005-J01001.

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Authors and Affiliations

  1. Research & Development Division, Korea Aerospace Industries, Ltd., Sachon, 664-942, Korea

    Younghwan Jang (Research Engineer) & Youin Jeong (Research Engineer)

  2. School of Nano and Advanced Materials Engineering, Engineering Research Center, i-Cube Center, Gyeongsang National University, Chinju, 660-701, Korea

    Sanguk Jin (Graduate Student) & Sangshik Kim (Professor)

Authors
  1. Younghwan Jang
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  2. Sanguk Jin
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  3. Youin Jeong
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  4. Sangshik Kim
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Correspondence to Sangshik Kim.

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Manuscript submitted November 3, 2008.

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Jang, Y., Jin, S., Jeong, Y. et al. Fatigue Crack Initiation Mechanism for Cast 319-T7 Aluminum Alloy. Metall Mater Trans A 40, 1579–1587 (2009). https://doi.org/10.1007/s11661-009-9834-0

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