Abstract
Strain accumulation as a result of cyclic loading affects the microstructure and mechanical performance of low-alloy steels under cyclic operation conditition. This manuscript presents a comprehensive analysis of a ferritic-pearlitic SA204 Grade C steel under strain-controlled low-cycle fatigue tests to understand the microstructural deformation and strain localization in the ferritic-pearlitic steel. Low-cycle fatigue tests were performed in a Gleeble® thermo-mechanical simulator at 0.008, 0.01, 0.015, and 0.02 strain amplitudes under an isothermal condition at 250 °C. The microstructure evolution during cyclic loading was evaluated using the samples from interrupted 0.01 strain amplitude tests. The LCF analysis shows strain localization at the ferrite-cementite interfaces and ferrite-pearlite interfaces. The characterization results using OM, SEM, EBSD, and nanoindentation analysis reveals the grain misorientation in the ferritic-pearlitic microstructure due to strain accumulation increases with the strain amplitudes and the loading cycles.
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 callDisclaimer: 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.
