Study of local structure in hyper-eutectic Zr-Cu-Al bulk glassy alloys by positron annihilation techniques

T. Ishiyama, K. Ishii, Yoshihiko Yokoyama, T. J. Konno, A. Iwase, F. Hori

研究成果: Conference article査読

抄録

The Zr-Cu-Al bulk glassy (BG) alloy, which has amorphous structure, possesses various properties such as high strength and toughness with compositional dependence. In the present study, density, positron annihilation lifetime and coincidence Doppler Broadening measurement have been performed for various compositional hyper-eutectic Zr-Cu-Al BG alloys. The density of hyper-eutectic Zr-Cu-Al BG alloys increases with decreasing of Zr fraction. In contrast, positron lifetime for all compositional alloys is almost constant about 165 psec. In addition, the CDB ratio profile is almost the same for hyper-eutectic alloys. This unchanging trend of CDB ratio profile is quite different from that of hypo-eutectic BG alloys. These results reveal that different internal structure exists in hyper and hypo-eutectic BG alloys.

本文言語English
論文番号012008
ジャーナルJournal of Physics: Conference Series
674
1
DOI
出版ステータスPublished - 2016 1 26
イベントInternational Workshop on Positron Studies of Defects 2014, PSD 2014 - Kyoto, Japan
継続期間: 2014 9 142014 9 19

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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