SEM In Situ Study on Pre-Corrosion and Fatigue Cracking Behavior of LY12CZ Aluminum Alloy

Xu Dong Li; Zhi Tao Mu; Zhi Guo Liu

doi:10.4028/www.scientific.net/KEM.525-526.81

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 525-526SEM In Situ Study on Pre-Corrosion and Fatigue...

SEM In Situ Study on Pre-Corrosion and Fatigue Cracking Behavior of LY12CZ Aluminum Alloy

Abstract:

Corrosion fatigue is a form of degradation subjected to combined damage of mechanical stress and corrosive medium, which is an issue in aircraft industry. Experimental investigations on prior corrosion fatigue cracking behavior of LY12CZ were conducted with scanning electron microscope (SEM). Results indicate corrosion damage is important for the fatigue small cracking behavior of LY12CZ aluminum alloy. The effect of corrosion pit on fatigue crack can be characterized by the depth of corrosion pit. Based on small crack, another way to evaluate crack growth rate for AALY12CZ is proposed.

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Periodical:

Key Engineering Materials (Volumes 525-526)

Pages:

81-84

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.525-526.81

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Online since:

November 2012

Authors:

Xu Dong Li, Zhi Tao Mu, Zhi Guo Liu

Keywords:

Aluminium Alloy, Fatigue Crack, Microstructure, Prior Corrosion, SEM In Situ Technology

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