Small fatigue crack propagation from micronotches in the cast aluminum alloy W319

A. Shyam, Y. N. Picard, J. W. Jones, J. E. Allison, S. M. Yalisove

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

A methodology of creating defects in a cast aluminum alloy, using femtosecond pulsed lasers has been described. Small fatigue crack growth behavior of cracks initiated from these defects was examined as a function of temperature. The variation in growth rate with temperature was related to the extent of crack-tip plasticity.

Original languageEnglish
Pages (from-to)1109-1114
Number of pages6
JournalScripta Materialia
Volume50
Issue number8
DOIs
StatePublished - Apr 2004
Externally publishedYes

Funding

Financial support provided by Ford Motor Company and National Science Foundation (NSF Grant no. DMR 021 1067) is gratefully acknowledged. The authors would like to thank Christopher J. Torbet (University of Michigan) for technical assistance and to Michael J. Caton (US-AFRL, Dayton, OH) for providing the long crack data.

Keywords

  • Aluminum alloys
  • Fatigue
  • Laser machining
  • Plastic deformation

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