Radiation effect in Zr-based metallic glasses

Seijiro Higashi, Kazuki Murooka, Shinji Nagata, Tatsuo Shikama, Kentaro Toh, Bun Tsuchiya

Research output: Contribution to journalArticlepeer-review

Abstract

Irradiation effect on transition of local structure in Zr-based metallic glasses was examined to stabilize metallic glasses and to transform crystalline structure to amorphous structure. To clarify the radiation effect on transition of local structure, we investigated primary phases formed in the metallic glasses during heat treatment. It is found that γ-ray and electron irradiation obstructed precipitation of fcc-Zr 2Ni even though little exposure, indicating that electronic excitation was effective as well as atomic collision. Atomic collision plays an important role in the transition of primary phase by irradiating ions like N and noble metals. On the other hand, Cu ion ifcc-Zrrradiation accelerated precipitation of fcc-Zr 2Ni. This is due to increase of concentration of Cu that is one of the elements of Zr 55Ni 5Al 10Cu 30 metallic glass. Crystalline structure was amorphized by irradiation of Au ion and amorphous phase was stabilized against the heat treatment.

Original languageEnglish
Pages (from-to)85-89
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume53
Issue number1
DOIs
Publication statusPublished - 2006 Jan

Keywords

  • Amorphized by irradiation
  • Atomic collision
  • Electronic excitation
  • Ion beam
  • Metallic glasses

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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