Volume and enthalpy relaxation in Zr55Cu30Ni5Al10 bulk metallic glass

O. Haruyama, Y. Nakayama, R. Wada, H. Tokunaga, J. Okada, T. Ishikawa, Y. Yokoyama

研究成果: Article査読

83 被引用数 (Scopus)

抄録

The structural relaxation in a Zr55Cu30Ni5Al10 bulk metallic glass was investigated by volume and enthalpy relaxation at various temperatures. The relaxation kinetics was well described by a stretched exponential relaxation function, Φ (t) = exp [- (t / τ)β]. The Kohlrausch index, β, ranged from 0.35 to 0.69, while the temperature dependence of relaxation time, τ was best fitted by the Vogel-Fulcher-Tanmmann formula, τ (T) = τ0 exp fenced(D* T0 / (T - T0)), with τ0 = 1.1 × 10-14 s, D* = 44.2 and T0 = 311 K. Atomic volumes in the equilibrium liquid region were measured by the electrostatic levitation method and these volumes, together with volumes of relaxed glasses, were better described by the Cohen-Grest model than by the Cohen-Turnbull model.

本文言語English
ページ(範囲)1829-1836
ページ数8
ジャーナルActa Materialia
58
5
DOI
出版ステータスPublished - 2010 3

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

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