Abstract
The effect of stress ratio, irradiation, oxidation, specimen volume and cumulative damage on fatigue behavior and fracture toughness were examined for HTTR (High Temperature Engineering Test Reactor) component materials, IG-110 and PCX graphites, and the following conclusions were derived: 1. The fatigue strength of IG-11 graphite, which is non-purified IG-110 graphite, decrease with decreasing stress ratio and crack extension speed was enhanced mainly by the increment of cyclic peak load. 2. The increment of fatigue strength of IG-110 graphite irradiated at the temperature of 575–650°C and neutron fluence of up to 1.92x1020–3.20x1020 n/cm2 corresponds to that of the static strength of irradiated one. 3. The fatigue strength of IG-110 graphite oxidized at 500°C in air can be inferred by the S-N curve analysis and the rule of degradation of static strength and crack extension speed of oxidized IG-110 graphite was enhanced as oxidation proceeds. 4. Cumulative fatigue damage Df of High-Low typed fatigue test...
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.
