Self-Affine Analysis of Fractures Surfaces of an Aluminum Alloy Using Fractographic Techniques

Abstract:

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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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Periodical:

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

Citation:

M. Hinojosa et al., "Self-Affine Analysis of Fractures Surfaces of an Aluminum Alloy Using Fractographic Techniques", Materials Science Forum, Vol. 560, pp. 91-96, 2007

Online since:

November 2007

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$35.00

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