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Effects of hydrogen on the crystallization process of Zr41.2Ti13.8Cu12.5Ni10 Be22.5 bulk amorphous alloys

  • Delin Peng*
  • , Jianfei Sun
  • , Jun Shen
  • , Yuyong Chen
  • *Corresponding author for this work
  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

Zr41.2Ti13.8Ni10Cu12.5 Be22.5 bulk amorphous alloy was prepared by arc-melting and rapid casting into a copper mould. Hydrogen charging was performed electrochemically in glycerine-phosphoric acid electrolyte. The effects of hydrogen on the crystallization process of Zr-Ti-Cu-Ni-Be bulk amorphous alloy were studied by differential scanning calorimetry (DSC), Kissinger equation and high-resolution transmission electron microscope (HRTEM). It is shown that hydrogen increases the activation energy of the glass transition and crystallization, and retards the nucleation and crystal growth. Moreover, hydrogen charging contributes to the formation of isolated crystals, resulting in the precipitation of fine and uniformly distributed nanocrystallines.

Original languageEnglish
Pages (from-to)724-727
Number of pages4
JournalXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume35
Issue number5
StatePublished - May 2006

Keywords

  • Bulk amorphous alloy
  • Crystallization process
  • Hydrogen
  • Nanocrystallines
  • Zr-Ti-Cu-Ni-Be

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