Abstract
Abstract Thermal fatigue tests were conducted for Inconel 625 and 2 1/4Cr-1Mo steel by use of a laboratory made thermal fatigue testing apparatus. The thermal fatigue crack initiation resistance of Inconel 625 is superior to that of 2 1/4Cr-1Mo steel at 823K. While thermal fatigue crack propagation rate of Inconel 625 is faster than that of 2 1/4Cr-1Mo steel at 723K and 823K. The lower crack propagation rate of 2 1/4Cr-1Mo steel can be explained by role of oxide produced at the crack surface during the thermal fatigue crack propagation. The thermal fatigue crack propagated predominantly with a mode of transgranular for both tested materials. The striation was predominantly observed on fracture surface of Inconel 625. The fracture surface of 2 1/4Cr-1 Mo steel was heavily covered by oxide film and the striation like pattern was also predominant on the rugged fracture surface after removing oxide film.
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.
