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
Communication

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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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

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