Effect of Milling Duration on Oxide-Formation Behavior of Oxide-Dispersion-Strengthened High-Entropy Alloys

• Autorzy: Song Yongwook , Kim Daeyoung , Nam Seungjin , Lee Kee-Ahn , Choi Hyunjoo

Identyfikatory

DOI

10.24425/amm.2021.136371

• Języki publikacji: EN

Abstrakty

EN

Oxide-dispersion-strengthened high-entropy alloys were produced by hot-pressing a ball-milled mixture of Y₂O₃ and atomized CoCrFeMnNi powder. The effect of milling duration on grain size reduction, oxide formation behavior, and the resulting mechanical properties of the alloys was studied. Both the alloy powder size and Y₂O₃ particle size decreased with milling time. Moreover, the alloy powder experienced severe plastic deformation, dramatically generating crystalline defects. As a result, the grain size was reduced to ~16.746 nm and in-situ second phases (e.g., MnO₂ and σ phase) were formed at the defects. This increased the hardness of the alloys up to a certain level, although excessive amounts of in-situ second phases had the reverse effect.

Słowa kluczowe

EN

oxide dispersion strengthening; high entropy alloy; severe plastic deformation; in situ second phases; milling time effects

• 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: 2021
• Tom: Vol. 66, iss. 3
• Strony: 735--740
• Opis fizyczny: Bibliogr. 23 poz., rys., wykr.

Twórcy

autor

Song Yongwook

• Kookmin University, School of Materials Science and Engineering, Seoul, Republic of Korea

• https://orcid.org/0000-0002-9171-3350

autor

Kim Daeyoung

• Kookmin University, School of Materials Science and Engineering, Seoul, Republic of Korea

• https://orcid.org/0000-0002-6153-3463

autor

Nam Seungjin

• Kookmin University, School of Materials Science and Engineering, Seoul, Republic of Korea

• https://orcid.org/0000-0001-9460-8233

autor

Lee Kee-Ahn

• Inha University, Department of Materials Science and Engineering, Incheon 22212, Republic of Korea

• https://orcid.org/0000-0003-2149-3871

autor

Choi Hyunjoo

• Kookmin University, School of Materials Science and Engineering, Seoul, Republic of Korea

• https://orcid.org/0000-0003-1969-6901

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).