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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1004-1005Effect of Environment on Fatigue Crack Propagation...

Effect of Environment on Fatigue Crack Propagation Behavior of an Al-Cu-Mg Aluminum Alloy

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Abstract:

The fatigue crack propagation behaviors of an Al-Cu-Mg alloy are investigated in different environments and with varying stress ratios. Fatigue experiments are carried out via a fatigue crack growth rate test in laboratory air, a 3.5% (mass fraction) NaCl solution and a tank seeper. The results show that a corrosion environment has an obvious influence on the fatigue crack growth rate, and the degrees of influence of the two different corrosive environments are basically identical. When the stress ratio is R = 0.5 and 0.06 with a decrease of the stress intensity factor, the difference in the crack propagation rates for the corrosion and air environments gradually increases. However, the corrosion acceleration in each stage of crack propagation is obvious while R=−1.

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Advanced Materials and Technologies

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Periodical:

Advanced Materials Research (Volumes 1004-1005)

Pages:

142-147

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1004-1005.142

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Online since:

August 2014

Authors:

Ming Liu*, Kun Zhang, Sheng Long Dai, Guo Ai Li, Min Hao, Lin Na Yi

Keywords:

Aluminium Alloy, Corrosion Fatigue (CF), Fatigue Crack Propagation (FCP)

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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