New method for determination of hidden supercooled liquid region of TiZr-based amorphous alloys

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

1 Scopus Citations
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Author(s)

  • T.H. Li
  • Y.C. Liao
  • S.M. Song
  • V.T. Nguyen
  • P.H. Tsai
  • J.S.C. Jang

Detail(s)

Original languageEnglish
Pages (from-to)1-5
Journal / PublicationJournal of Non-Crystalline Solids
Volume510
Online published20 Feb 2019
Publication statusPublished - 15 Apr 2019

Abstract

TiZr-based metallic glass has a unique glass transition point. It is located at the top of the first exothermic peak instead of at the typical endothermic transformation reaction before the supercooled liquid region (∆Tx). It is hard to identify the glass transition temperature (Tg) and ∆Tx of these TiZr-based amorphous alloys by an exothermic-exothermic reaction. In this study, based on the physical characteristics of the free volume reduction, KWW-exponent β, the activation energy for structural relaxation (Qrelax), and the incubation time by isothermal annealing in DSC analyses, the exact Tg point can be precisely identified. As a result, the Ti42Zr42Ta3Si10Sn3 amorphous alloy presents an extra-wide supercooled liquid region (∆Tx), up to 149 K.

Research Area(s)

  • Amorphous alloy, Free volume, Glass transition temperature, Incubation time, KWW-exponent β

Citation Format(s)

New method for determination of hidden supercooled liquid region of TiZr-based amorphous alloys. / Li, T.H.; Liao, Y.C.; Song, S.M.; Nguyen, V.T.; Tsai, P.H.; Jang, J.S.C.; Huang, J.C.

In: Journal of Non-Crystalline Solids, Vol. 510, 15.04.2019, p. 1-5.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review