Fatigue Striations and Fissures in 2024-T3 Aluminum Alloy |
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| Journal | Materials Science Forum (Volumes 567 - 568) |
|---|---|
| Volume | Materials Structure & Micromechanics of Fracture V |
| Edited by | Pavel Ε andera |
| Pages | 397-400 |
| DOI | 10.4028/www.scientific.net/MSF.567-568.397 |
| Citation | A.J. McEvily et al., 2007, Materials Science Forum, 567-568, 397 |
| Online since | December, 2007 |
| Authors | A.J. McEvily, Masahiro Endo, S. Cho, J. Kasivitamnuay, Hisao Matsunaga |
| Keywords | Aluminium Alloy, da/dN, Fatigue Crack Propagation, Fatigue Fissures, Fatigue Striations |
| 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 K investigated, but at low K levels striation spacings were larger than the corresponding da/dN values. The percentage of the fracture surface containing striations varied with the K level, ranging from less than 1 % at low K levels to 80 % at higher K levels. The reason for the discrepancy between the spacing of striations and the corresponding da/dN values is discussed. |
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