Initiation and Growth of Pits and Cracks in Corrosion Fatigue for High Strength Aluminium Alloy Observed by Micro Computed-Tomography Using Ultra-Bright Synchrotron Radiation

Yoshikazu Nakai; Daiki Shiozawa

doi:10.4028/www.scientific.net/AMM.83.162

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 83Initiation and Growth of Pits and Cracks in...

Initiation and Growth of Pits and Cracks in Corrosion Fatigue for High Strength Aluminium Alloy Observed by Micro Computed-Tomography Using Ultra-Bright Synchrotron Radiation

Abstract:

Measurement of shape and dimension of pits and cracks formed in corrosion fatigue tests of a high-strength aluminium alloy, 7075-T651 were conducted by computed-tomography using ultra bright synchrotron radiation X-ray. Complex corrosion process could be observed and detail shapes of corrosion pits could be identified. Sometimes, corrosion pit and corroded area were formed under passive film, and those were not observed from the surface.

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Periodical:

Applied Mechanics and Materials (Volume 83)

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162-167

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.83.162

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Online since:

July 2011

Authors:

Yoshikazu Nakai, Daiki Shiozawa

Keywords:

Computed Tomography, Corrosion Fatigue, Corrosion Pit, Crack, Synchrotron Radiation

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