Microstructural and Tensile Property Differences between Ni-16Mo and ODS alloys Fabricated by the Powder Metallurgy Processes

• Autorzy: Bae Jaeyoon , Lee Sumin , Chang Kunok , Kaoumi Djamel , Noh Sanghoon

Identyfikatory

DOI

10.24425/amm.2024.149758

• Języki publikacji: EN

Abstrakty

EN

Ni-16Mo and ODS alloys were fabricated by the powder metallurgical processes, and their microstructures and tensile properties were investigated. Ni-16Mo-7Cr and Ni-16Mo-7Cr-0.3Ti-0.35Y₂O₃ (in wt.%) alloys were prepared by mechanical alloying, uniaxial hot pressing, and heat treatment processes. Microstructural observations of these alloys revealed that the Ti and Y₂O₃ additions to a Ni-16Mo alloy were significantly effective to refine the grain size and form nano-sized Y-Ti-O oxide particles. Consequently, the tensile strengths at room temperature and 700°C were considerably enhanced. This improvement of tensile properties can be mainly attributed to the formation of nano-sized oxide particles, as well as the refined grain size. It is thus concluded that Ni-16Mo alloy with Ti and Y₂O₃ additions would be very effective in improving the mechanical properties especially at elevated temperatures.

Słowa kluczowe

EN

Ni-16Mo alloy; oxide dispersion strengthened; ODS; grain refinement; nano-oxide particle; tensile property

• 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: 2024
• Tom: Vol. 69, iss. 2
• Strony: 421--424
• Opis fizyczny: Bibliogr. 11 poz., fot., rys., tab.

Twórcy

autor

Bae Jaeyoon

• Pukyong National University, Department of Materials Science and Engineering, 45 Yongso-ro, Nam-gu, Busan, Korea, Republic of Korea

• https://orcid.org/0000-0002-8670-4820

autor

Lee Sumin

• Pukyong National University, Department of Materials Science and Engineering, 45 Yongso-ro, Nam-gu, Busan, Korea, Republic of Korea

autor

Chang Kunok

• Kyung Hee University, Department of Nuclear Engineering, Yongin, Republic of Korea

autor

Kaoumi Djamel

• North Carolina State University, Department of Nuclear Engineering, Raleigh, USA

autor

Noh Sanghoon

• Pukyong National University, Department of Materials Science and Engineering, 45 Yongso-ro, Nam-gu, Busan, Korea, Republic of Korea

• https://orcid.org/0000-0003-4943-1226

Bibliografia

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Uwagi

This research was supported by National R&D Program through the National Research Foundation of Korea (NRF) funded by the Korea Government (Ministry of Science and ICT) (No.2021M2A7A1083117) and by the Pukyong National University Research Fund in 2020 (No. CB20200034)