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Quantification of free volume differences in a bulk amorphous alloy
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View: Figures


Image of FIG. 1.
FIG. 1.

Fragility plot of the relaxation time at the glass transition onset as a function of inverse temperature for .

Image of FIG. 2.
FIG. 2.

Enthalpy recovery measurements in the glass transition region after (a) isothermal relaxation for at three different temperatures; (b) isothermal relaxation from the amorphous state for varying time at . In addition, the measurement for an unrelaxed “as-received” sample is shown.

Image of FIG. 3.
FIG. 3.

Representative HRTEM image and diffraction pattern of the sample annealed for at . No evidence of nanocrystals was found and the alloy remained fully amorphous.

Image of FIG. 4.
FIG. 4.

Enthalpy and free volume difference vs. temperature for different free volume states of the amorphous alloy. Here the “as-cast” data points at 585, 595, and were determined by adding the measured values of enthalpy recovery after annealing for a time [from Fig. 2(a)] to the enthalpy of the supercooled liquid from Ref. 27. At additional data were collected for intermediate annealing times of , , and [Fig. 2(b)] and those data are also shown here.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Quantification of free volume differences in a Zr44Ti11Ni10Cu10Be25 bulk amorphous alloy