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

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Abstract

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.

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Author notes

  1. Justin K. Brosi (Graduate Student)

    Present address: Bettis Atomic Power Laboratory, West Mifflin, PA, USA

Authors and Affiliations

  1. Department of Materials Science & Engineering, Case Western Reserve University, White Metallurgy Building, Cleveland, OH, 44106, USA

    Justin K. Brosi (Graduate Student), S. Mohsen Seifi (Graduate Student) & John J. Lewandowski (Leonard Case, Jr., Professor of Metallurgy)

Authors
  1. Justin K. Brosi
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  2. S. Mohsen Seifi
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  3. John J. Lewandowski
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Corresponding author

Correspondence to John J. Lewandowski.

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Manuscript submitted March 21, 2012.

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Brosi, J.K., Seifi, S.M. & Lewandowski, J.J. Delamination of Sensitized Al-Mg Alloy During Fatigue Crack Growth in Room Temperature Air. Metall Mater Trans A 43, 3952–3956 (2012). https://doi.org/10.1007/s11661-012-1361-8

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