Static measurements for A- and B-relaxation below Tg in a Zr55Cu30Ni5Al10BMG

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

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The static A- and B-relaxation in a Zr55Cu30Ni5Al10 bulk metallic glass (BMG) was investigated by volume relaxation. The relaxation time A for A-relaxation was well fitted by Vogel-Fulcher-Tammann (VFT) equation. The manifestation of B-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 B,0=1.4×l0-11 s and an activation energy of EB=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 B-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, Annual Meeting
PublisherWiley-Blackwell
Pages273-280
Number of pages8
ISBN (Electronic)9781118663547
ISBN (Print)9781118605813
DOIs
Publication statusPublished - 2013 Jan 1

Keywords

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

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)

Fingerprint Dive into the research topics of 'Static measurements for A- and B-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

    Haruyama, O., Sawada, H., Yoshikawa, K., Kawamata, T., Yokoyama, Y., & Sugiyama, K. (2013). Static measurements for A- and B-relaxation below Tg in a Zr55Cu30Ni5Al10BMG. In TMS 2013 142nd Annual Meeting and Exhibition, Annual Meeting (pp. 273-280). Wiley-Blackwell. https://doi.org/10.1002/9781118663547.ch35