Abstract
9Cr‐2W steel is used as structural materials of high temperature and pressure components in power plants. These components can be degraded as increasing their operation time. Since isothermal aged 9Cr‐2W steel is subject to cavities or precipitates between grain boundaries, it is one of the major causes of early breakage of these components. Therefore, it is necessary to insure reliability of the power plants by using nondestructive evaluation. To address such a need, in this study, we evaluated isothermal damaged 9Cr‐2W steel specimens using ultrasound. The specimens used in this study were prepared by isothermal aging at 600 °C with variation in aging time. Using the measured data, we investigated relations between attenuations and area fraction of cavities or precipitates and between sound velocities and hardness of the isothermal aged P92 steel. Furthermore, we evaluated creep‐fatigue life time of the isothermal aged 9Cr‐2W steel using attenuation and sound velocity.
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.
