He ion irradiation induced nanocrystallization in Cu50Zr45Ti5 glassy alloy

Guoqiang Xie, Lin Shao, Dmitri V. Louzguine-Luzgin, Akihisa Inoue

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Partial nanocrystallization induced by ion irradiation can be used to improve the surface properties in metallic glasses. We investigated the crystallization behavior and the structure of the formed nanocrystalline phases in a melt-spun Cu50Zr45Ti5 glassy alloy irradiated with 140keV He ions to a fluence of 1.7×1017/cm2. Crystalline nanoparticles were precipitated by He ion irradiation. The nanocrystalline phases were identified as a mixture of the orthorhombic Cu10Zr7 phase, tetragonal CuZr2 phase and monoclinic CuZr phase. Hardness enhancement was observed at a depth close to the projected range of the He ions, which was related to the formation of the crystalline nanoparticles.

Original languageEnglish
Pages (from-to)829-833
Number of pages5
JournalSurface and Coatings Technology
Volume206
Issue number5
DOIs
Publication statusPublished - 2011 Nov 25

Keywords

  • Characterization
  • Ion irradiation
  • Metallic glass
  • Nanocrystallization
  • Transmission electron microscopy

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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