Local Topology vs. Atomic-Level Stresses as a Measure of Disorder: Correlating Structural Indicators for Metallic Glasses

Y.Q. Cheng; J. Ding; E. Ma

doi:10.1080/21663831.2012.722759

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Local Topology vs. Atomic-Level Stresses as a Measure of Disorder: Correlating Structural Indicators for Metallic Glasses

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- Local Topology vs. Atomic-Level Stresses as a Measure of Disorder: Correlating Structural Indicators for Metallic Glasses
- Local Topology vs. Atomic-Level Stresses as a Measure of Disorder: Correlating Structural Indicators for Metallic Glasses
- 材料研究快报（英文） 2013年1卷第1期页码：3-12
- 作者机构：
  
  1. Chemical and Engineering Materials Division Oak Ridge National Laboratory Oak Ridge TN USA,37831
  2. Department of Materials Science and Engineering Johns Hopkins University Baltimore MD
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2012.722759
  中图分类号：
- 网络首发：2012-10-08，
  
  纸质出版：2013
- 稿件说明：
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Y.Q. Cheng, J. Ding, E. Ma. Local Topology vs. Atomic-Level Stresses as a Measure of Disorder: Correlating Structural Indicators for Metallic Glasses[J]. 材料研究快报（英文）, 2013,1(1):3-12.

Y.Q. Cheng, J. Ding, E. Ma. Local Topology vs. Atomic-Level Stresses as a Measure of Disorder: Correlating Structural Indicators for Metallic Glasses[J]. Materials Research Letters, 2013, 1(1): 3-12.
Y.Q. Cheng, J. Ding, E. Ma. Local Topology vs. Atomic-Level Stresses as a Measure of Disorder: Correlating Structural Indicators for Metallic Glasses[J]. 材料研究快报（英文）, 2013,1(1):3-12. DOI： 10.1080/21663831.2012.722759.

Y.Q. Cheng, J. Ding, E. Ma. Local Topology vs. Atomic-Level Stresses as a Measure of Disorder: Correlating Structural Indicators for Metallic Glasses[J]. Materials Research Letters, 2013, 1(1): 3-12. DOI： 10.1080/21663831.2012.722759.

摘要

Abstract

This brief overview presents a critical assessment of the choice of structural parameters that may be used to describe the degree of local order/disorder in metallic glasses (MGs) and to establish the relationship between the amorphous structure and the properties of an MG. By summarizing our own quantitative analysis of representative MG models

we compare

and relate to one another

several measures of structural disorder in amorphous alloys

including the topology of quasi-equivalent clusters

the concept of free volume

and the atomic-level stresses. The model systems used for demonstrating the correlations are characterized by two different and prototypical types of short-range order (SRO): a Cu

MG exhibiting pronounced icosahedral SRO

and a Pd

MG representative of a metal–metalloid system

with solute-centered tri-capped trigonal prisms as the dominant local motif. Also outlined are some ideas in terms of the relationship between the glass structures and properties

including the challenges in correlating the local structures with the propensity for relaxation and shear

transformations.

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相关机构

f School of Materials Science and Engineering Tsinghua University

e National Engineering Research Center of Light Alloy Net Forming Shanghai Jiao Tong University

d City University of Hong Kong Matter Science Research Institute (Futian)

c Department of Mechanical Engineering City University of Hong Kong Hong Kong People’s Republic of China

b Faculty of Mechanical Engineering and Mechanics Ningbo University

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