Prediction of glass forming ability in Cu-Zr-Ti ternary amorphous alloys

Li Ge, Xidong Hui, Guoliang Chen, Zi-kui Liu

Research output: Contribution to journalArticle

Abstract

By using CALPHAD technique, the driving forces for crystallization from the undercooled liquid in Cu-Zr-Ti ternary alloys were evaluated by means of Turnbull and Thompson-Spaepen (TS) Gibbs free energy approximate equations, respectively. Time- temperature-transformation (TTT) curves and the corresponding critical cooling rates of thirteen compositions of Cu-Zr-Ti system were calculated with Davies-Uhlmann kinetic equations based on continuous nucleation theory. With Turnbull and TS equations, the calculated critical cooling rates for these Cu-Zr-Ti alloys are in the range of 1.38 × 102-7.34 × 105 K/s and 0.64-1.36 × 104 K/s, respectively. It is shown that both groups of the calculated values for the glass forming ability(GFA) are in agreement with the experimental data qualitatively. The glass forming ability (GFA) with TS equation is more in accordance with the experimental results than that with Turnbull equation. This work suggests that combination of CALPHAD technique and kinetic calculation may provide a valid method for the prediction of GFA in Cu-Zr-Ti alloys.

Original languageEnglish (US)
Pages (from-to)589-593
Number of pages5
JournalXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume37
Issue number4
StatePublished - Apr 1 2008

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Ternary alloys
Amorphous alloys
Glass
Cooling
Kinetics
Gibbs free energy
Crystallization
Nucleation
Liquids
Chemical analysis
Temperature
Ti-Zr alloy

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

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abstract = "By using CALPHAD technique, the driving forces for crystallization from the undercooled liquid in Cu-Zr-Ti ternary alloys were evaluated by means of Turnbull and Thompson-Spaepen (TS) Gibbs free energy approximate equations, respectively. Time- temperature-transformation (TTT) curves and the corresponding critical cooling rates of thirteen compositions of Cu-Zr-Ti system were calculated with Davies-Uhlmann kinetic equations based on continuous nucleation theory. With Turnbull and TS equations, the calculated critical cooling rates for these Cu-Zr-Ti alloys are in the range of 1.38 × 102-7.34 × 105 K/s and 0.64-1.36 × 104 K/s, respectively. It is shown that both groups of the calculated values for the glass forming ability(GFA) are in agreement with the experimental data qualitatively. The glass forming ability (GFA) with TS equation is more in accordance with the experimental results than that with Turnbull equation. This work suggests that combination of CALPHAD technique and kinetic calculation may provide a valid method for the prediction of GFA in Cu-Zr-Ti alloys.",
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Prediction of glass forming ability in Cu-Zr-Ti ternary amorphous alloys. / Ge, Li; Hui, Xidong; Chen, Guoliang; Liu, Zi-kui.

In: Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering, Vol. 37, No. 4, 01.04.2008, p. 589-593.

Research output: Contribution to journalArticle

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