Mo을 첨가한 ReSi(1.75)단결정의 미세구조 및 열전특성

Abstract

Various Cu-Zr binary amorphous alloys, which exhibit different strains and atomic packing densities, were synthesized to investigate the crucial factor governing the degree of the plasticity. It was found that there is a linear proportion between the atomic packing density and the plasticity such that amorphous alloys with lower packing density exhibited higher plasticity and vice versa. Considering that the plasticity of the amorphous alloy is closely related to the facility of the structural rearrangement during the process of loading, the role played by the atomic packing density on the plasticity can be quantified by measuring the effective activation energy for overall crystallization. Indeed, there was an inverse proportionality between the packing density (i.e. plasticity) and the activation energy for overall crystallization. Herein, we report that the origin of the plasticity exhibited by monolithic amorphous alloys lies in the characteristics of the atomic packing state, which can be quantified by the effective activation energy for overall crystallization.