Abstract
The low-cycle fatigue behaviour of a high-strength CrMoV steel has been evaluated in the as-received (AR) and the quenched and tempered (QT) conditions, at room temperature. While the quenching and tempering treatment causes a marked increase in the tensile strength and hardness, it leads to an impairment of the fracture toughness and the low-cycle fatigue (LCF) resistance of the material. A fractographic examination reveals that while there is a large zone of fatigue crack propagation the AR condition, in sharp contrast there is small zone of fatigue crack propagation and a large zone of static fracture in the QT condition. The reduction in fatigue resistance of the QT material is attributed to a loss in fracture toughness and a fall in the values of ϵ f′ and n′.
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.
