Abstract

Abstract Kinetics of corrosion fatigue (CF) crack propagation in an Al—Zn—Mg alloy have been studied as a function of applied potential and temperature in a 3·5 wt-% NaCl solution using centre notched specimens. This study especially concerned the stress corrosion (SC) crack propagation associated with CF crack propagation. CF crack propagation rate increased with increasing applied potential. CF and SC cracks both propagated in a brittle intergranular manner. CF crack propagation was thought to be an enhanced phenomenon of SC crack propagation. By modifying the simple superposition model, synergistic interaction between pure fatigue and environmental effects was taken into consideration in evaluating the CF crack propagation rate. in terms of the SC crack propagation rate. The present experimental data also led to the conclusion that the CF crack propagation rate is simply proportional to (∆Κ)2·0–2·2, and Boltzmann's factor, where ∆Κ is the stress intensity range. The apparent activation energy for CF cr...

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.