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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationPRICM7
Pages1046-1049
Number of pages4
DOIs
Publication statusPublished - 2010 Aug 17
Event7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7 - Cairns, QLD, Australia
Duration: 2010 Aug 22010 Aug 6

Publication series

NameMaterials Science Forum
Volume654-656
ISSN (Print)0255-5476

Other

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

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Yamasaki, T., Yamada, M., Mori, T., Kikuchi, T., Yokoyama, Y., Inoue, A., & Kim, D. H. (2010). Viscous flow behaviour of supercooled liquids and mechanical properties in Zr-Cu-Ni-Al bulk metallic glasses. In PRICM7 (pp. 1046-1049). (Materials Science Forum; Vol. 654-656). https://doi.org/10.4028/www.scientific.net/MSF.654-656.1046