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Title: Unified equation for the strength of bulk metallic glasses

Abstract

In the present study, a conceptual approach to evaluate the strength of metallic glass systems is proposed from a free-volume point of view. Based on the physical analogy between the plastic deformation and glass transition, the strength of amorphous structures was found to depend on both the localized shear mechanism and the atomic cohesive energy. Interestingly, we find that the strength at the ambient temperature (T0) can be determined by the glass transition temperature (Tg) and molar volume (V), and can be specifically predicted by a unified parameter of (Tg-T0)/V. The predicted strength was unambiguously verified from experimental data reported for a number of metallic glass systems.

Authors:
 [1];  [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); High Temperature Materials Laboratory
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
989673
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 88; Journal Issue: 22
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AMBIENT TEMPERATURE; DEFORMATION; GLASS; METALLIC GLASSES; PLASTICS; SHEAR; TRANSITION TEMPERATURE

Citation Formats

Nieh, Tai-Gang, Liu, Chain T, and Yang, Bing. Unified equation for the strength of bulk metallic glasses. United States: N. p., 2006. Web.
Nieh, Tai-Gang, Liu, Chain T, & Yang, Bing. Unified equation for the strength of bulk metallic glasses. United States.
Nieh, Tai-Gang, Liu, Chain T, and Yang, Bing. Mon . "Unified equation for the strength of bulk metallic glasses". United States. doi:.
@article{osti_989673,
title = {Unified equation for the strength of bulk metallic glasses},
author = {Nieh, Tai-Gang and Liu, Chain T and Yang, Bing},
abstractNote = {In the present study, a conceptual approach to evaluate the strength of metallic glass systems is proposed from a free-volume point of view. Based on the physical analogy between the plastic deformation and glass transition, the strength of amorphous structures was found to depend on both the localized shear mechanism and the atomic cohesive energy. Interestingly, we find that the strength at the ambient temperature (T0) can be determined by the glass transition temperature (Tg) and molar volume (V), and can be specifically predicted by a unified parameter of (Tg-T0)/V. The predicted strength was unambiguously verified from experimental data reported for a number of metallic glass systems.},
doi = {},
journal = {Applied Physics Letters},
number = 22,
volume = 88,
place = {United States},
year = {Mon May 01 00:00:00 EDT 2006},
month = {Mon May 01 00:00:00 EDT 2006}
}