Abstract
Fatigue dislocation structures in quenched and tempered CrMo alloy steels have been investigated using transmission electron microscopy. The substructure depends strongly on the number of cyclic loading cycles. After 10 4 such cycles, dislocation dipoles and loops are formed in ferritic laths. Dislocation slip bands are also formed when the number of cycles is increased to 10 5. Relatively thick fatigue deformation bands are also formed at large numbers of cycles. The initiation and propagation of these bands appears to be a process whereby a high-energy dislocation structure is converted to a low-energy one. The propagation of these deformation bands leads to initiation of microscopic fatigue cracks.
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.
