Behavior of free volume in ZrCuAl bulk metallic glass after irradiation

Yuka Fukumoto, Akito Ishii, Akihiro Iwase, Yoshihiko Yokoyama, Fuminobu Hori

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Free volumes in Zr50Cu40Al10 bulk metallic glasses irradiated by 100 MeV and 200 MeV Xe ions and 2 MeV electrons at room temperature have been investigated by using positron annihilation techniques, the micro Vickers hardness and X-ray diffraction measurements. No crystallization took place due to both ion and electron irradiations. The coincidence Doppler broadening spectra of annihilation gamma rays also remained unchanged by ion and electron irradiation. Meanwhile, an increase and a decrease of positron lifetimes after electron and ion irradiation, respectively, were observed. This suggests the structural modification of free volumes. The response of positron lifetime to ion and electron irradiations may be connected with the tendency of hardness.

Original languageEnglish
Article number012010
JournalJournal of Physics: Conference Series
Publication statusPublished - 2010
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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