Abstract
High temperature low cycle fatigue (LCF) is influenced by various time dependent processes such as creep, oxidation, phase transformations and dynamic strain ageing (DSA) depending on test conditions of strain rate and temperature. In this paper the detrimental effects of DSA and oxidation in high temperature LCF are discussed with reference to extensive studies on 316L(N) stainless steel. DSA has been found to enhance the stress response and reduce ductility. It localizes fatigue deformation, enhances fatigue cracking and reduces fatigue life. High temperature oxidation accelerates transgranular and intergranular fatigue cracking during long hold time tests in austenitic stainless steel. In welds, microstructural features such as presence of coarse grains and formation of brittle phases due to transformation of δ ferrite during testing influence crack initiation, propagation and fatigue life.
Sign-in/Register to access full text options 
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.
