Static measurements for α- and β-relaxation below Tg in a Zr55Cu30Ni5Al10 BMG

Osami Haruyama, Hiroyuki Sawada, Kazuhiro Yoshikawa, Tohru Kawamata, Yoshihiko Yokoyama, Kazumasa Sugiyama

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

3 Citations (Scopus)

Abstract

The static α- and β-relaxation in a Zr55Cu 30Ni5Al10 bulk metallic glass (BMG) was investigated by volume relaxation. The relaxation time τα for α-relaxation was well fitted by Vogel-Fulcher-Tammann (VFT) equation. The manifestation of β-relaxation in a lower temperature region was confirmed by isochronal change in electrical resistance, and its kinetics was examined by isothermal change in volume during relaxation. The kinetics was characterized by a pre-exponential factor of τβ,0=1. 4×10-11 s and an activation energy of Eβ=160 kJ/mol=2 8.0 RTg. The x-ray analysis with a synchrotron radiation revealed that the structural change was different from that of β-relaxation of metallic glasses with the trend of the chemical short range ordering (CSRO) process.

Original languageEnglish
Title of host publicationTMS 2013 - 142nd Annual Meeting and Exhibition, Supplemental Proceedings
Subtitle of host publicationLinking Science and Technology for Global Solutions
Pages273-280
Number of pages8
Publication statusPublished - 2013 Apr 25
Event142nd Annual Meeting and Exhibition: Linking Science and Technology for Global Solutions, TMS 2013 - San Antonio, TX, United States
Duration: 2013 Mar 32013 Mar 7

Publication series

NameTMS Annual Meeting

Other

Other142nd Annual Meeting and Exhibition: Linking Science and Technology for Global Solutions, TMS 2013
Country/TerritoryUnited States
CitySan Antonio, TX
Period13/3/313/3/7

Keywords

  • Bulk metallic glass
  • Mode coupling
  • Structural relaxation
  • Volume relaxation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

Fingerprint

Dive into the research topics of 'Static measurements for α- and β-relaxation below T<sub>g</sub> in a Zr<sub>55</sub>Cu<sub>30</sub>Ni<sub>5</sub>Al<sub>10</sub> BMG'. Together they form a unique fingerprint.

Cite this