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


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
Number of pages8
ISBN (Electronic)9781118663547
ISBN (Print)9781118605813
Publication statusPublished - 2013 Jan 1


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

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)


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