Investigations of mechanically alloyed Ni-Zr-Ti-Si amorphous alloys with significant supercooled regions

C. K. Lin, Y. B. Feng, P. Y. Lee, L. Y. Wang, H. M. Lin, G. S. Chen

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8 Citations (Scopus)

Abstract

This study examined the amorphization behavior of Ni57Zr20Ti23-xSix (x = 0, 1, 3) alloy powders synthesized by mechanical alloying technique. According to the results, after 5 h of milling, the mechanically alloyed powders were amorphous at compositions of Ni57Zr20Ti23-xSix (x = 0, 1, 3). The amorphization behavior of Ni57Zr20Ti20Si3 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 Ni57Zr20Ti23-xSix amorphous powders was investigated by differential scanning calorimeter (DSC). As the results demonstrated, the amorphous powders were found to exhibit a large supercooled liquid region before crystallization. The supercooled liquid regions, defined by the difference between Tg and Tx, (i.e. ΔT = Tg-Tx), are 95 K, 66 K, and 88 K, for Ni57Zr20Ti23, Ni57Zr20Ti22Si1, and Ni57Zr20Ti20Si3, respectively.

Original languageEnglish
Pages (from-to)1149-1155
Number of pages7
JournalIntermetallics
Volume10
Issue number11-12
DOIs
Publication statusPublished - Nov 2002
Externally publishedYes

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Keywords

  • C. Mechanical alloying and milling

ASJC Scopus subject areas

  • Metals and Alloys

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