Fatigue Striations and Fissures in 2024-T3 Aluminum Alloy

Abstract:

Article Preview

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.

Info:

Periodical:

Materials Science Forum (Volumes 567-568)

Edited by:

Pavel Šandera

Pages:

397-400

Citation:

A.J. McEvily et al., "Fatigue Striations and Fissures in 2024-T3 Aluminum Alloy", Materials Science Forum, Vols. 567-568, pp. 397-400, 2008

Online since:

December 2007

Export:

Price:

$38.00

[1] R.W. Hertzberg et al., ICF 5, Cannes, Pergamon Press, vol. 2 (1981), pp.907-914.

[2] J. Schijve, in ASTM STP 415 (1967), pp.415-457.

[3] F. O. Riemelmoser, R. Pippan and H. P. Stüwe, Acta Mater., vol. 46 (1998), pp.1793-1799.

[4] K.J. Nix and H.M. Flower, Proc. Fatigue '81, Westbury House (1981), pp.117-126.

[5] C.D. Beachem, Trans. ASM, vol. 60 (1967), p.327. Fig. 5. Plot of da/dN as a function of ∆K, including the spacings of fissures and striations. Fig. 4. The fraction of striated area as a function of ∆K.

Fetching data from Crossref.
This may take some time to load.