Abnormally enhanced diamagnetism in Al-Zn-Mg alloys

Katsuhiko Nishimura, Kenji Matsuda, Seungwon Lee, Norio Nunomura, Tomoki Shimano, Artenis Bendo, Katsumi Watanabe, Taiki Tsuchiya, Takahiro Namiki, Hiroyuki Toda, Masatake Yamaguchi

Research output: Contribution to journalArticle

Abstract

Temperature and time dependences of magnetization of Al-1.0%Zn-4.2%Mg, Al-2.6%Zn-3.2%Mg, Al-4.1%Zn-1.1%Mg, and Al-5%Zn (at.%) alloys were measured in the range between 10 and 310 K after various periods of natural aging and peak-aged heat treatments. Enhanced diamagnetic contributions on the magnetization were observed for the as-quenched Al-Zn-Mg alloys for the first time. The enhanced diamagnetism observed in Al-2.6%Zn-3.2%Mg and Al-4.1%Zn-1.1%Mg were found to largely alter in natural aging, while that of Al-1.0%Zn-4.2%Mg little changed. After peak-aged heat treatments, the diamagnetism of Al-Zn-Mg was largely reduced. The binary Al-5%Zn showed neither enhanced diamagnetism nor natural aging effect on the magnetization. Isothermal time variations of magnetization of Al-Zn-Mg alloys at 300 K were found to be related with solute-vacancy clustering.

LanguageEnglish
Pages405-409
Number of pages5
JournalJournal of Alloys and Compounds
Volume774
DOIs
Publication statusPublished - Feb 5 2019

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Diamagnetism
Magnetization
Aging of materials
Heat treatment
Vacancies
Mg-Al-Zn-Mn-Si-Cu alloy
Temperature

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Nishimura, K., Matsuda, K., Lee, S., Nunomura, N., Shimano, T., Bendo, A., ... Yamaguchi, M. (2019). Abnormally enhanced diamagnetism in Al-Zn-Mg alloys. Journal of Alloys and Compounds, 774, 405-409. https://doi.org/10.1016/j.jallcom.2018.10.037

Abnormally enhanced diamagnetism in Al-Zn-Mg alloys. / Nishimura, Katsuhiko; Matsuda, Kenji; Lee, Seungwon; Nunomura, Norio; Shimano, Tomoki; Bendo, Artenis; Watanabe, Katsumi; Tsuchiya, Taiki; Namiki, Takahiro; Toda, Hiroyuki; Yamaguchi, Masatake.

In: Journal of Alloys and Compounds, Vol. 774, 05.02.2019, p. 405-409.

Research output: Contribution to journalArticle

Nishimura, K, Matsuda, K, Lee, S, Nunomura, N, Shimano, T, Bendo, A, Watanabe, K, Tsuchiya, T, Namiki, T, Toda, H & Yamaguchi, M 2019, 'Abnormally enhanced diamagnetism in Al-Zn-Mg alloys' Journal of Alloys and Compounds, vol. 774, pp. 405-409. https://doi.org/10.1016/j.jallcom.2018.10.037
Nishimura K, Matsuda K, Lee S, Nunomura N, Shimano T, Bendo A et al. Abnormally enhanced diamagnetism in Al-Zn-Mg alloys. Journal of Alloys and Compounds. 2019 Feb 5;774:405-409. https://doi.org/10.1016/j.jallcom.2018.10.037
Nishimura, Katsuhiko ; Matsuda, Kenji ; Lee, Seungwon ; Nunomura, Norio ; Shimano, Tomoki ; Bendo, Artenis ; Watanabe, Katsumi ; Tsuchiya, Taiki ; Namiki, Takahiro ; Toda, Hiroyuki ; Yamaguchi, Masatake. / Abnormally enhanced diamagnetism in Al-Zn-Mg alloys. In: Journal of Alloys and Compounds. 2019 ; Vol. 774. pp. 405-409.
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