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

Research output: Contribution to journalConference articlepeer-review

Abstract

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.

Original languageEnglish
Article number012008
JournalJournal of Physics: Conference Series
Volume674
Issue number1
DOIs
Publication statusPublished - 2016 Jan 26
EventInternational Workshop on Positron Studies of Defects 2014, PSD 2014 - Kyoto, Japan
Duration: 2014 Sep 142014 Sep 19

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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