期刊
ACTA MATERIALIA
卷 61, 期 12, 页码 4474-4480出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2013.04.016
关键词
Solidity/liquidity; Metallic glasses; Molecular dynamics; Structural anisotropy
资金
- US National Science Foundation, Division of Materials Research [NSF-DMR-0904188]
- Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy
Metallic glasses are viscoelastic materials that contain a wide spectrum of local configurations that range from more solid-like to more liquid-like varieties. To quantitatively characterize the local solidity (or liquidity) in metallic glasses, here we present a robust method and a universal materials parameter. The new parameter, solidity (liquidity) index, is based on the evaluation of bond orientational anisotropy. The usefulness of the proposed index in assessing the varying degrees of solidity (or liquidity) is demonstrated in metallic glass models produced via molecular dynamics simulations. The spectrum of local solidity is also analyzed in terms of its dependence on local structural features, particularly on the basis of different types of Voronoi polyhedra and atomic volume. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据