Metallurgical and Materials Transactions A

, Volume 43, Issue 11, pp 3952–3956 | Cite as

Delamination of Sensitized Al-Mg Alloy During Fatigue Crack Growth in Room Temperature Air

  • Justin K. Brosi
  • S. Mohsen Seifi
  • John J. Lewandowski


Fatigue crack growth experiments in air at 295 K (22 °C) were conducted on 6.35 mm thick plate samples of a commercial Al-Mg alloy machined from the L-T orientation. Thermal exposures for times up to 2000 hours at 343 K, 353 K, 373 K, and 448 K (70 °C, 80 °C, 100 °C, and 175 °C) produced sensitization and delamination in the S-T plane during fatigue testing, dependent on the level of thermal exposure and K max employed. Identical tests conducted in a “dry” environment produced no delamination, indicating that environment may enhance the phenomena.


  1. 1.
    I.J. Polmear: Light Alloys: Metallurgy of the Light Metals, 2nd ed., Edward Arnold, London, 1995.Google Scholar
  2. 2.
    M.C. Carroll, P.I. Gouma, M.J. Millis, G.S. Daehn, and B.R. Dunbar: Scripta Mater., 2000, vol. 42, pp. 335–40.CrossRefGoogle Scholar
  3. 3.
    R.H. Jones, D.R. Baer, M.J. Danielson, and J.S. Vetrano: Metall. Mater. Trans. A, 2001, vol. 32A, pp. 1699–1711.CrossRefGoogle Scholar
  4. 4.
    D.R. Baer, C.F. Windisch, M.H. Engelhard, M.J. Danielson, R.H. Jones, and J.S. Vetrano: J. Vac. Sci. Technol. A, 2000, vol. 18, no. 1, pp. 131–36.CrossRefGoogle Scholar
  5. 5.
    N. Winzer and C.E. Cross: Metall. Mater. Trans. A, 2009, vol. 40A, pp. 273–74. CrossRefGoogle Scholar
  6. 6.
    J.C. Chang and T.H. Chuang: Metall. Mater. Trans. A, 1999, vol. 30A, pp. 3191–99.CrossRefGoogle Scholar
  7. 7.
    A.J. Davenport, Y. Yuan, R. Ambat, B.J. Connolly, M. Strangwood, A. Afseth, and G. Scamans: Mater. Sci. Forum, 2006, vols. 519–521, pp. 641–46.Google Scholar
  8. 8.
    I.N.A. Oguocha, O.J. Adigun, and S. Yannacopoulos: J. Mater. Sci., 2008, vol. 43, pp. 4208–14.Google Scholar
  9. 9.
    R.L. Holtz, P.S. Pao, R.A. Bayles, T.M. Longazel, and R. Goswami: Metall. Mater. Trans. A, 2012, vol. 43A, pp. 2839–49.CrossRefGoogle Scholar
  10. 10.
    J.K. Brosi and J.J. Lewandowski: Scripta Mater., 2010, vol. 63, pp. 799–802.CrossRefGoogle Scholar
  11. 11.
    H. Yukawa, Y. Murata, M. Morinaga, Y. Takahashi, and H. Yoshida: Acta Metall. Mater., 1995, vol. 43, no. 2, pp. 681–88.CrossRefGoogle Scholar
  12. 12.
    R. Goswami, G. Spanos, P.S. Pao, and R.L. Holtz: Mater. Sci. Eng. A, 2010, vol. 527, pp. 1089–95.CrossRefGoogle Scholar
  13. 13.
    J.L. Searles, P.I. Gouma, and R.G. Cucheit: Metall. Mater. Trans. A, 2001, vol. 32A, pp. 2859–67.CrossRefGoogle Scholar
  14. 14.
    K.A. Unocic, M.J. Millis, G.S. Daehn, and P. Kobe: Microsc. Microanal., 2005, vol. 11, pp. 700–01.Google Scholar
  15. 15.
    J.K. Brosi: MS Thesis, Case Western Reserve University, 2010.Google Scholar
  16. 16.
    ASTM B928: Annual Book of ASTM Standards, ASTM International, West Conshohocken, PA, 2007.Google Scholar
  17. 17.
    ASTM E647: Annual Book of ASTM Standards, ASTM International, West Conshohocken, PA, 2008.Google Scholar
  18. 18.
    N.J.H. Holroyd and D. Hardie: Corros. Sci., 1981, vol. 21, pp. 129–44.CrossRefGoogle Scholar
  19. 19.
    D.R. Lesuer, C.K. Syn, O.D. Sherby, J. Wadsworth, J.J. Lewandowski, and W.H. Hunt: Int. Mater. Rev., 1996, vol. 41, pp. 169–77.CrossRefGoogle Scholar
  20. 20.
    L.Y. Ellis and J.J. Lewandowski: Mater. Sci. Eng. A, 1994, vol. 183, pp. 59–67.CrossRefGoogle Scholar
  21. 21.
    K.T. Venkateswara Rao, W. Yu, and R.O. Ritchie: Metall. Trans., A, 1989, vol. 20A, pp. 485–97.Google Scholar
  22. 22.
    S. Suresh, A.K. Vasudevan, M. Tosten, and P.R. Howell: Acta Metall., 1987, vol. 35, pp. 25–46.CrossRefGoogle Scholar
  23. 23.
    R. Goswami, G. Spanos, P.S. Pao, and R.L. Holtz: Metall. Mater. Trans. A, 2011, vol. 42A, pp. 348–55.CrossRefGoogle Scholar
  24. 24.
    R.O. Ritchie and J.F. Knott: Acta Metall., 1977, vol. 21, pp. 239–48.Google Scholar
  25. 25.
    J.K. Shang and R.O. Ritchie: Metall. Trans. A, 1989, vol. 20A, pp. 897–908.Google Scholar
  26. 26.
    W.A. Zinsser and J.J. Lewandowski: Metall. Mater. Trans. A, 1998, vol. 29A, pp. 1749–57.CrossRefGoogle Scholar
  27. 27.
    S.M. Seifi, J.K. Brosi, and J.J. Lewandowski: Unpublished research, 2012.Google Scholar

Copyright information

© The Minerals, Metals & Materials Society and ASM International 2012

Authors and Affiliations

  • Justin K. Brosi
    • 1
    • 2
  • S. Mohsen Seifi
    • 1
  • John J. Lewandowski
    • 1
  1. 1.Department of Materials Science & EngineeringCase Western Reserve UniversityClevelandUSA
  2. 2.Bettis Atomic Power LaboratoryWest MifflinUSA

Personalised recommendations