Structural relaxation of open volume In hyper-eutectic Zr-Cu-Al bulk amorphous alloys measured by positron annihilation

T. Ishiyama, K. Kobayashi, Yoshihiko Yokoyama, T. J. Konno, A. Iwase, F. Hori

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

Abstract

The Zr-Cu-Al bulk amorphous (BA) alloys, which have no long-range ordered structure, possess various properties such as high strength and toughness with compositional dependence. In the present study, in order to estimate the natures of local structure change and relaxation behavior of hyper-eutectic BA alloys during annealing, positron annihilation measurements and density measurement have been performed for hyper-eutectic Zr-Cu-Al BA alloys with annealing. The enthalpy relaxation and structural relaxation was also measured by differential scanning calorimetry (DSC) measurement. These results show that the relaxation process of free volume containing in hyper-eutectic BA alloys is different from that in hypo-eutectic alloys.

Original languageEnglish
Title of host publicationPositron Annihilation - ICPA-17
EditorsC.Q. He , Y.C. Wu , N. Qi , Z.Q. Chen
PublisherTrans Tech Publications Ltd
Pages130-133
Number of pages4
Volume373 DDF
ISBN (Print)9783038356059
DOIs
Publication statusPublished - 2016
Event17th International Conference onPositron Annihilation, ICPA-17 - Wuhan, China
Duration: 2016 Sep 202016 Sep 25

Other

Other17th International Conference onPositron Annihilation, ICPA-17
Country/TerritoryChina
CityWuhan
Period16/9/2016/9/25

Keywords

  • Bulk amorphous alloy
  • Free volume
  • Positron annihilation
  • Structural relaxation

ASJC Scopus subject areas

  • Radiation
  • Materials Science(all)
  • Condensed Matter Physics

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