Relaxation behavior of Zr-Cu-Al ternary bulk glassy alloy studied by using positron annihilation techniques

Akito Ishii, Shinya Mineno, Akihiro Iwase, Yoshihiko Yokoyama, Toyohiko J. Konno, Fuminobu Hori

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Zr-based bulk glassy (BG) alloys show high tensile strength and a high Charpy impact value. In this study, the free volume changes for the hypoeutectic Zr60Cu30Al10 BG alloy during isothermal annealing below glass transition temperature (Tg) have been investigated by positron annihilation lifetime and coincidence Doppler broadening (CDB) measurements. The positron lifetime of hypoeutectic and eutectic BG alloys is almost the same, although the atomic volume ratio, estimated by the density for the eutectic BG alloy is different from that for the hypoeutectic BG alloy. The CDB spectra show a marked difference between eutectic and hypoeutectic BG alloys; that is, the spectrum of the hypoeutectic BG alloy is closes to that of Zr metal than that of the eutectic BG alloy. This result exhibits that the elemental fraction of Zr atoms around free volume in hypoeutectic BG alloy is greater than that in eutectic BG alloy. The CDB ratio profiles for the hypoeutectic BG alloy during annealing shows no appreciable change. The same trend was observed in the eutectic BG alloy.

本文言語English
ホスト出版物のタイトルPRICM7
出版社Trans Tech Publications Ltd
ページ1070-1073
ページ数4
ISBN(印刷版)0878492550, 9780878492558
DOI
出版ステータスPublished - 2010
イベント7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7 - Cairns, QLD, Australia
継続期間: 2010 8 22010 8 6

出版物シリーズ

名前Materials Science Forum
654-656
ISSN(印刷版)0255-5476
ISSN(電子版)1662-9752

Other

Other7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7
国/地域Australia
CityCairns, QLD
Period10/8/210/8/6

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

フィンガープリント

「Relaxation behavior of Zr-Cu-Al ternary bulk glassy alloy studied by using positron annihilation techniques」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル