Abstract
Oxide dispersion strengthened (ODS) ferritic steels containing 0.38–0.39 wt% Y 2O 3 have been produced by mechanical alloying. After thermo-mechanical treatment, the structure of ODS steels includes polygonized extended grains and a great number (to ∼ 10 16–10 17 cm −3 ) of ultrafine complex yttrium oxides ∼2–3 nm in diameter. Irradiation by fast neutrons to 4.5×10 26 n/ m 2 (340 K) and 1.5×10 22 n/ m 2 (77 K) leads to strengthening and plasticity decreasing in ODS alloys. The advantages of ODS ferritic steels in creep resistance and strength against ferritic-martensitic steel 12Cr–2Mo–Nb–B–V and austenitic steel 16Cr–15Ni–3Mo–Ti–V display obviously when creep rate is approximately 10 −2 h −1 and fracture time is longer than 1000 h.
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.
