Effect of Cu Addition on Oxide Growth of Al-7 mass%Mg Alloy at High Temperature

• Autorzy: Ha Seong-Ho , Shah Abdul Wahid , Kim Bong-Hwan , Yoon Young-Ok , Lim Hyun-Kyu , Kim Shae K.

Identyfikatory

DOI

10.24425/amm.2021.136364

• Języki publikacji: EN

Abstrakty

EN

Effect of Cu addition on oxide growth of Al-7 mass%Mg alloy at high temperature was investigated. As-cast microstructures of Al-7 mass%Mg and Al-7 mass%Mg-1 mass%Cu alloys showed α-Al dendrites and area of secondary particles. The 1 mass%Cu addition into Al-7 mass%Mg alloy formed Mg₃₂(Al, Cu)₄₉ ternary phase with β-Al₃Mg₂. The total fraction of two Mg-containing phases in Cu-added alloy was higher than the β-Al₃Mg₂ fraction in Cu-free alloy. From measured weight gains depending on time at 500°C under an air atmosphere, it was shown that all samples exhibited significant weight gains depending on time. Al-7mass%Mg1mass%Cu alloy showed the relatively increased oxidation rate when compared with Cu-free alloy. All the oxidized cross-sections throughout the entire oxidation time showed coarse and dark areas regarded as oxides grown from the surface to inside, but bigger oxidized areas were formed in the Al-7mass%Mg-1mass%Cu alloy containing higher fraction of Mg-based phases in the as-cast microstructure. As a result of compositional analysis on the oxide clusters, it was found that the oxide clusters contained Mg-based oxides formed through internal oxidation during a long time exposure to oxidizing environments.

Słowa kluczowe

EN

Al-Mg system; Cu addition; oxidation; phase diagram

• 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: 699--702
• Opis fizyczny: Bibliogr. 12 poz., rys., tab., wykr.,wzory

Twórcy

autor

Ha Seong-Ho

• Korea Institute of Industrial Technology (KITECH), Advanced Materials and Process R&D Department, Incheon 21999, Republic of Korea

• https://orcid.org/0000-0002-4718-8421

autor

Shah Abdul Wahid

• Korea Institute of Industrial Technology (KITECH), Advanced Materials and Process R&D Department, Incheon 21999, Republic of Korea

• https://orcid.org/0000-0001-6625-2655

autor

Kim Bong-Hwan

• Korea Institute of Industrial Technology (KITECH), Advanced Materials and Process R&D Department, Incheon 21999, Republic of Korea

• https://orcid.org/0000-0002-8273-8281

autor

Yoon Young-Ok

• Korea Institute of Industrial Technology (KITECH), Advanced Materials and Process R&D Department, Incheon 21999, Republic of Korea

• https://orcid.org/0000-0002-2239-6064

autor

Lim Hyun-Kyu

• Korea Institute of Industrial Technology (KITECH), Advanced Materials and Process R&D Department, Incheon 21999, Republic of Korea

• https://orcid.org/0000-0002-3086-3515

autor

Kim Shae K.

• Korea Institute of Industrial Technology (KITECH), Advanced Materials and Process R&D Department, Incheon 21999, Republic of Korea

• https://orcid.org/0000-0001-9450-4944

Bibliografia

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Uwagi

1. This work was supported by funding (No. 20011420) from Ministry of Trade, Industry and Energy, Korea.

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