Correlation of glass-forming ability to thermal properties in Ti-based bulk metallic glasses

  • Enhuai Yin
  • , Shujie Pang
  • , Xidong Hui
  • , Min Zhang
  • , Longchao Zhuo
  • , Chen Chen
  • , Tao Zhang*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Ti45.8Zr6.2Cu45-xNi xSn2Si1 (x = 0, 2, 4, 5, 7, 9, 11, 13 and 15 at.%) and Ti52-yZryCu40.9Ni 5.1Sn2 (y = 4, 6, 8, 10, 12, 14 and 16 at.%) bulk metallic glasses with critical diameters up to 4 mm were prepared by copper mold casting. The thermal properties and crystallization behavior of these Ti-based glassy alloys have been investigated in detail. It is shown that the higher the onset temperature of the last crystallization event (Tn), the larger the glass forming ability (GFA). By considering the comprehensive effect of glass transition temperature (Tg), the onset temperature of the first crystallization event (Tx), Tn and liquidus temperature (Tl), we proposed a parameter N = (2Tx - Tg + Tn)/2Tl for the evaluation of GFA. It is found that this criterion is particularly effective for the BMGs which show multistage crystallization events upon heating.

Original languageEnglish
Pages (from-to)7-13
Number of pages7
JournalJournal of Alloys and Compounds
Volume546
DOIs
StatePublished - 2013

Keywords

  • Metallic glasses
  • Rapid-solidification
  • Thermal analysis

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