Difference of Microstructures and Mechanical Properties between 9Cr-1W Ferritic/martensitic Steel and ODS Steel

• Autorzy: Kim Ga Eon , Kim Tae Kyu , Noh Sanghoon

Identyfikatory

DOI

10.24425/amm.2020.131735

• Języki publikacji: EN

Abstrakty

EN

Ferrtic/martensitic and ODS steels were fabricated by the mechanical alloying process, and their microstructures and mechanical properties were investigated. The 9Cr-1W and 9Cr-1W-0.3Ti-0.35Y₂ O₃ (in wt.%) steels were prepared by the same fabrication process such as mechanical alloying, hot isostatic pressing, and hot rolling processes. A microstructural observation of these steels indicated that the Ti and Y₂ O₃ additions to 9Cr-1W steel were significantly effective to refine the grain size and form nano-sized Y-Ti-O oxide particles. As a result, the tensile strengths at room and elevated temperatures were considerably enhanced. Considerable improvement of the creep resistances at 700°C was also evaluated. It is thus concluded that 9Cr-1W ODS steel with Ti and Y₂ O₃ additions would be very effective in improving the mechanical properties especially at elevated temperatures.

Słowa kluczowe

EN

9Cr-1W steel; oxide dispersion strengthening; ODS; grain refinement; nano-oxide particle; creep resistance

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2020
• Tom: Vol. 65, iss. 1
• Strony: 337--341
• Opis fizyczny: Bibliogr. 13 poz., fot., rys., tab.

Twórcy

autor

Kim Ga Eon

• Korea Atomic Energy Research Institute, Nuclear Materials Division, 111, Daedeok-Daero 989 Beon-Gil, Yuseong-Gu, Daejeon, Republic of Korea

autor

Kim Tae Kyu

• Korea Atomic Energy Research Institute, Nuclear Materials Division, 111, Daedeok-Daero 989 Beon-Gil, Yuseong-Gu, Daejeon, Republic of Korea

autor

Noh Sanghoon

• Korea Atomic Energy Research Institute, Nuclear Materials Division, 111, Daedeok-Daero 989 Beon-Gil, Yuseong-Gu, Daejeon, Republic of Korea

Bibliografia

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Uwagi

EN

1. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (NRF-2017M2A8A4017639).

PL

2. Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).