Preparation and thermal stability of mechanically alloyed Ni-Zr-Ti-Y amorphous powders

Chung Kwei Lin, Chien Chung Wang, Rong Ruey Jeng, Yu Lom Lin, Chien Hung Yeh, Jinn P. Chu, Pee Yew Lee

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

In the current study, amorphous Ni67-xZr10Ti 23Yx alloy powders were synthesized by mechanical alloying technique. The mechanically alloyed powders were amorphous, after 5 h of milling, at compositions of Ni67-xZr10Ti 23Yx (x=0-12). The amorphization behavior of Ni 59Zr10Ti23Y8 was examined in details. The conventional X-ray diffraction and synchrotron EXAFS results confirm that the fully amorphous powders formed after 5 h of milling. The thermal stability of the Ni67-xZr10Ti23Y x amorphous powders was investigated by differential scanning calorimeter. As the results demonstrated, the amorphous powders with low yttrium concentration (x=0-6) or high yttrium concentration (x=12) exhibit no glass transition behavior. However, the Ni67-xZr10Ti 23Yx (x=7-10) amorphous powders were found to exhibit a wide supercooled liquid region before crystallization.

Original languageEnglish
Pages (from-to)1011-1017
Number of pages7
JournalIntermetallics
Volume12
Issue number7-9 SPEC. ISS.
DOIs
Publication statusPublished - Jul 2004
Externally publishedYes

Keywords

  • B. Glasses, metallic
  • B. Thermal stability
  • C. Mechanical alloying and milling

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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