발간논문

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Vol.47, No.11, 759 ~ 773, 2009
Title
Plasticity of Amorphous Alloys: 1. Homogeneous Deformation
박경원 Kyoung Won Park , 이창면 Chang Myeon Lee , 이재철 Jae Chul Lee
Abstract
Amorphous alloys, in addition to being promising materials for a variety of practical applications, provide an excellent test bed for evaluating our understanding of the underlying physics on deformation in amorphous solids. Like many amorphous materials, amorphous alloys can exhibit either homogeneous or inhomogeneous deformation depending on the stress level. The mode of deformation has a strong influence on whether the material behavior is classified as ductile or brittle. It was observed that the characteristics of these deformations are largely dependent on the atomic-scale structures of the alloys and determine the amount of the plastic deformation prior to failure. In this study, the structural features that control the homogeneous deformation of amorphous alloys are outlined on the basis on experiments and molecular dynamics simulations.
Key Words
amorphous alloy, free volume, short-range order, homogeneous deformation, plasticity
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