Viscous flow behaviour of supercooled liquids and mechanical properties in Zr-Cu-Ni-Al bulk metallic glasses

T. Yamasaki, M. Yamada, T. Mori, T. Kikuchi, Y. Yokoyama, A. Inoue, D. H. Kim

研究成果: Conference contribution

7 被引用数 (Scopus)

抄録

Viscous flow behaviour of supercooled liquids and mechanical properties in Zr55+XCu30-XNi5Al10 (X=0, 5 and 10 at. %) and Zr65Cu18Ni7Al10 bulk metallic glasses (BMGs) have been examined. Viscosity has been measured by using a penetration viscometer at a high-speed heating rate of 400 K/min. With increasing Zr-content, Tg tended to decrease and Tx tended to increase, resulting ΔTx (=Tx-Tg) increaseing up to about 170 K under a heating rate of 400 K/min by the DSC analysis. The viscosity lowered about one order of magnitude, e.g., minimum value of the viscosity decreased from 3∼4×106 Pa-s for the Zr55Cu30Ni5Al10 and Zr 60Cu25Ni5Al10 BMGs down to 5∼6×105 Pa-s for the Zr65Cu20Ni 5Al10 and Zr65Cu18Ni 7Al10 BMGs under the same heating condition. Compression tests were also carried out at a slow strain rate of about 1 × 10 -4 s-1 at room temperature. With increasing Zr-content, the apparent yield stress was decreased but the total strain at fracture was increased significantly, suggesting that there is a strong relationship between viscosity and the mechanical properties in these BMGs.

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1046-1049
ページ数4
ISBN(印刷版)0878492550, 9780878492558
DOI
出版ステータスPublished - 2010
外部発表はい
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月 22010 8月 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

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