Self-Affine Analysis of Fractures Surfaces of an Aluminum Alloy Using Fractographic Techniques |
| Journal |
Materials Science Forum (Volume 560) |
| Volume |
Advanced Structural Materials III |
| Edited by |
H. Balmori-Ramirez, J.G. Cabañas-Moreno, H.A. Calderon-Benavides, K. Ishizaki and A. Salinas-Rodriguez |
| Pages |
91-96 |
| DOI |
10.4028/www.scientific.net/MSF.560.91 |
| Online since |
November, 2007 |
| Authors |
M. Hinojosa,
Edgar I. Morales,
N. Mohamed
|
| Keywords |
Aluminum Alloy, Correlation Length, Fracture Surface, Hurst Exponent |
| Abstract |
We report the self-affine analysis on fracture surfaces of an A319-type aluminum alloy
with different modification and refinement treatments, broken both in Charpy impact and cyclic
impulse tests. The in-plane and out-of-plane Hurst exponent as well as the correlation length are
obtained using quantitative fractographic techniques. It is found that the Hurst exponent, ζ, has a
value of about 0.8 and is not influenced neither by the crack propagation modes nor by the
microstructural condition. The self-affine correlation length is found to be related to the grain size
resulting from the refining and modifying treatments applied to the alloy. |
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