Journal
CORROSION SCIENCE
Volume 75, Issue -, Pages 415-425Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2013.06.026
Keywords
Corrosion fatigue; Modelling studies; SEM; Steel; Stress corrosion
Funding
- US Department of Transportation Pipeline and Hazardous Materials Safety Administration (PHMSA) through the office of Jim Merritt
- US Department of Transportation Pipeline and Hazardous Materials Safety Administration (PHMSA) through the office of Robert Smith
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This study presents an evaluation of fatigue crack propagation in three steels (A36, X52, and X70) in a simulated fuel-grade ethanol environment. A fracture mechanics testing approach was used to determine crack propagation rates as a function of the stress-intensity-factor amplitude (AK). Results of this testing and the fracture analysis indicate that all three materials are susceptible to enhanced fatigue damage in fuel-grade ethanol environments. We show that the damage mechanism is attributed to susceptibility of each material to ethanol stress-corrosion cracking under fatigue loading conditions and propose a model for determining crack growth rates in ethanol fuel. Published by Elsevier Ltd.
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