Fatigue striations and fissures in 2024-T3 aluminum alloy

A. J. Mcevily, M. Endo, S. Cho, J. Kasivitamnuay, H. Matsunaga

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Abstract

A study has been made of the striations and fissures developed in the aluminum alloy 2024-T3 during fatigue crack growth. Fissures were found to form on inclined facets. They were uniformly spaced as the result of a shielding process. Striation spacings were in accord with da/dN values at the higher levels of ΔK investigated, but at low ΔK levels striation spacings were larger than the corresponding da/dN values. The percentage of the fracture surface containing striations varied with the ΔK level, ranging from less than 1% at low ΔK levels to 80% at higher ΔK levels. The reason for the discrepancy between the spacing of striations and the corresponding da/dN values is discussed.

Original languageEnglish
Pages (from-to)397-400
Number of pages4
JournalMaterials Science Forum
Volume567-568
Publication statusPublished - Feb 1 2008
Externally publishedYes
Event5th International Conference on Materials Structure and Micromechanics of Fracture, MSMF-5 - Brno, Czech Republic
Duration: Jun 27 2007Jun 29 2007

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Mcevily, A. J., Endo, M., Cho, S., Kasivitamnuay, J., & Matsunaga, H. (2008). Fatigue striations and fissures in 2024-T3 aluminum alloy. Materials Science Forum, 567-568, 397-400.