Medium-range Orders in Amorphous Alloys and Their Role on the Plasticity: A Molecular Dynamics Viewpoint Study

Title
Medium-range Orders in Amorphous Alloys and Their Role on the Plasticity: A Molecular Dynamics Viewpoint Study
Authors
이창면이미림이광렬강경한이병주이재철
Keywords
amorphous materials; deformation; computer simulation; short(medium)-range order
Issue Date
2010-02
Publisher
대한금속 . 재료학회지; Journal of the Korean Institute of Metals and Materials
Citation
VOL 48, NO 2, 101-108
Abstract
The local structural states of amorphous alloys have been depicted previously via short-range orders (SROs). However, the concept of SROs alone is inadequate and sometimes insufficient to explain the structure-property relation of the amorphous alloys. In this study, we propose new types of medium-range building structures that affect the mechanical properties, plasticity in particular. Using a combination of molecular dynamics simulations and the Voronoi tessellation method, we demonstrate a three-dimensional configuration of icosahedral medium-range orders (I-MROs) and elucidate how these icosahedral orders evolve by the application of shear deformation. It was observed that the structural stability of the icosahedral orders relies largely on how they are linked via percolation and this linking is explained in detail.
URI
http://pubs.kist.re.kr/handle/201004/38502
ISSN
1738-8228
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE