Abstract
Refractory elements are added to strengthen the Ni-based superalloys for turbine disks, while the effects of these elements on the oxidation resistance remain to be investigated systematically to continually improve the working temperature. In this work, the effects of typical strengthening elements, including Ta, W, Mo, Hf and Nb, on the isothermal oxidation behavior of Ni-based superalloys at 900 °C were studied. The results indicated that increasing concentrations of Ta, W, and Mo enhanced the oxidation resistance, while adding 4 wt% Nb and 2 wt% Hf accelerated the oxidation rates in different degrees, which was explained in terms of diffusion and phase precipitation.
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.
