Abstract
Dynamic strain ageing processes may increase the fatigue limit of steels. To activate these processes, thermomechanical treatments with cyclic loadings at the temperature of the highest effectiveness of dynamic strain ageing can be applied. The treatments increase the dislocation density and change the dislocation structure to a more stable state by immobilisation of mobile dislocations due to locking processes by dissolved carbon atoms and small carbides. The generated dislocation structure requires higher stress amplitudes to induce dislocation movements, and consequently a longer crack initiation period, a lower crack propagation rate and a higher fatigue limit at room temperature occur.
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.
