발간논문

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Vol.44, No.2, 84 ~ 91, 2006
Title
Mechanism of the Deformation-induced Nanocrystallization in a Bulk Amorphous Alloy under Uniaxial Compression
이석우 Seok Woo Lee , 이승재 Seung Jae Lee , 채수원 Soo Won Chae , 이재철 Jae Chul Lee
Abstract
The CU50Zr43Al7 monolithic bulk amorphous alloy was prepared to investigate the mechanism of the deformation-induced nanocrystallization. The sample tested under quasistatic uniaxial compression showed a strength of ~2 GPa along with large plastic strains of ~7%. High resolution transmission electron microscopy (HRTEM) conducted on the fractured sample revealed abundant nanocrystallites that were precipitated homogeneously in the amorphous matrix. The deformation-induced nanocrystallization behavior observed from the monolithic amorphous alloy was explained based on the thermodynamic and kinetic viewpoints.
Key Words
Deformation-induced nanocrystallite, Uniaxial compression, Amorphous alloy
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