Rev.Adv.Mater.Sci. (RAMS)
No 1, Vol. 18, 2008, pages 14-17

EXAFS AND DILATOMETRIC ANALYSIS OF STRUCTURAL REARRANGEMENT
AFTER ANNEALING IN A Zr-BASED BULK METALLIC GLASS

Kwang Seok Lee, Jürgen Eckert and Young Won Chang

Abstract

The atomic-scale structural rearrangement of a Zr41.2Ti13.8Cu12.5Ni10Be22.5 bulk metallic glass has been investigated in relation to the duration of annealing time at 430 °C by applying both dilatometric measurements and extended X-ray absorption fine structure (EXAFS) spectroscopy. The phase-shifted distance between first shells of Zr atoms (Rp) was 2.95 Å by EXAFS and the average nearest-neighbor distance r0 calculated from dilatometry was 3.2 Å. From the results, the progress of structural relaxation caused by the annihilation of free volume could be revealed as the annealing time increases.

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