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

Research output: Contribution to journalArticle

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

Fingerprint

Amorphous alloys
Powders
Amorphization
Mechanical alloying
Liquids
Crystallization
Calorimeters
Synchrotrons
Thermodynamic stability
Scanning
X ray diffraction
Chemical analysis

Keywords

  • C. Mechanical alloying and milling

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

Investigations of mechanically alloyed Ni-Zr-Ti-Si amorphous alloys with significant supercooled regions. / Lin, C. K.; Feng, Y. B.; Lee, P. Y.; Wang, L. Y.; Lin, H. M.; Chen, G. S.

In: Intermetallics, Vol. 10, No. 11-12, 11.2002, p. 1149-1155.

Research output: Contribution to journalArticle

Lin, C. K. ; Feng, Y. B. ; Lee, P. Y. ; Wang, L. Y. ; Lin, H. M. ; Chen, G. S. / Investigations of mechanically alloyed Ni-Zr-Ti-Si amorphous alloys with significant supercooled regions. In: Intermetallics. 2002 ; Vol. 10, No. 11-12. pp. 1149-1155.
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