Abstract
The failure of a boiler operating at 540°C and 9.4 MPa was investigated by evaluation of material removed from the near-failure region and by thermodynamic analysis. A scanning Auger microprobe, scanning electron microscope, and THERMO-CALC thermodynamic software (Thermo-Calc Software, Stockholm) were used in the investigation. Results showed that the segregation of impurity elements (phosphorous, tin, and nitrogen) to grain boundaries and the in-service formation of thin carbide films and granular carbides (Cr,Fe)23C6 on the grain boundaries were important factors in the failure process.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.