Crystallization behavior and thermal stability of two-glassy phase Zr-based bulk metallic glasses

P. H. Tsai, I. S. Huang, T. H. Li, J. S.C. Jang, J. C. Huang, K. C. Hsieh

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Based on the thermodynamic calculation, two phase separated Zr-based BMGs (Zr63.8Ni16.2Cu15Al5 and Zr 66Cu15.3Ni8.7Al10) which developed by the authors previous study were selected for investigating their crystallization behavior and thermal stabilities by means of differential scanning calorimetry (DSC), and X-ray diffractometry. The results show that the Zr66Cu15.3Ni8.7Al10 amorphous alloy exhibits higher GFA than the Zr63.8Ni16.2Cu 15Al5 amorphous alloy. But the Zr63.8Ni 16.2Cu15Al5 amorphous alloy presents higher activation energy of crystallization (227 kJ/mole and 188 kJ/mole for Zr 63.8Ni16.2Cu15Al5 and Zr 66Cu15.3Ni8.7Al10 BMGs, respectively). However, Zr66Cu15.3Ni8.7Al 10 amorphous alloy contains less atomic percentage of Cu and Ni elements (with positive heat of mixing) may result in forming less volume phase separation as well less interface area between these separated amorphous phase. Overall, the Zr66Cu15.3Ni8.7Al10 amorphous alloy exhibits longer incubation time at higher annealing temperature in comparison with the Zr63.8Ni16.2Cu15Al 5 amorphous alloy, suggesting that the amorphous alloy which contains fewer amounts of Cu and Ni elements would have better thermal stability.

Original languageEnglish
Title of host publicationTHERMEC 2009 Supplement
Pages562-567
Number of pages6
DOIs
StatePublished - 2010
Event6th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2009 - Berlin, Germany
Duration: 25 Aug 200929 Aug 2009

Publication series

NameAdvanced Materials Research
Volume89-91
ISSN (Print)1022-6680

Conference

Conference6th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2009
Country/TerritoryGermany
CityBerlin
Period25/08/0929/08/09

Keywords

  • Bulk metallic glass
  • Crystallization and thermal properties
  • Glass transition temperature
  • Phase separation

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