Nanoductility in silicate glasses is driven by topological heterogeneity

Bu Wang, Yingtian Yu, Mengyi Wang, John C. Mauro, Mathieu Bauchy

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The existence of nanoscale ductility during the fracture of silicate glasses remains controversial. Here, based on molecular dynamics simulations coupled with topological constraint theory, we show that nanoductility arises from the spatial heterogeneity of the atomic network's rigidity. Specifically, we report that localized floppy modes of deformation in underconstrained regions of the glass enable plastic deformations of the network, resulting in permanent change in bond configurations. Ultimately, these heterogeneous plastic events percolate, thereby resulting in a nonbrittle mode of fracture. This suggests that nanoductility is intrinsic to multicomponent silicate glasses having nanoscale heterogeneities.

Original languageEnglish (US)
Article number064202
JournalPhysical Review B
Volume93
Issue number6
DOIs
StatePublished - Feb 9 2016

Fingerprint

Silicates
silicates
Glass
glass
Constraint theory
ductility
rigidity
Rigidity
plastic deformation
Ductility
Molecular dynamics
Plastic deformation
plastics
molecular dynamics
Plastics
Computer simulation
configurations
simulation

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Wang, Bu ; Yu, Yingtian ; Wang, Mengyi ; Mauro, John C. ; Bauchy, Mathieu. / Nanoductility in silicate glasses is driven by topological heterogeneity. In: Physical Review B. 2016 ; Vol. 93, No. 6.
@article{cc54457251e5443d9371ec2acc2eab95,
title = "Nanoductility in silicate glasses is driven by topological heterogeneity",
abstract = "The existence of nanoscale ductility during the fracture of silicate glasses remains controversial. Here, based on molecular dynamics simulations coupled with topological constraint theory, we show that nanoductility arises from the spatial heterogeneity of the atomic network's rigidity. Specifically, we report that localized floppy modes of deformation in underconstrained regions of the glass enable plastic deformations of the network, resulting in permanent change in bond configurations. Ultimately, these heterogeneous plastic events percolate, thereby resulting in a nonbrittle mode of fracture. This suggests that nanoductility is intrinsic to multicomponent silicate glasses having nanoscale heterogeneities.",
author = "Bu Wang and Yingtian Yu and Mengyi Wang and Mauro, {John C.} and Mathieu Bauchy",
year = "2016",
month = "2",
day = "9",
doi = "10.1103/PhysRevB.93.064202",
language = "English (US)",
volume = "93",
journal = "Physical Review B-Condensed Matter",
issn = "2469-9950",
publisher = "American Physical Society",
number = "6",

}

Nanoductility in silicate glasses is driven by topological heterogeneity. / Wang, Bu; Yu, Yingtian; Wang, Mengyi; Mauro, John C.; Bauchy, Mathieu.

In: Physical Review B, Vol. 93, No. 6, 064202, 09.02.2016.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Nanoductility in silicate glasses is driven by topological heterogeneity

AU - Wang, Bu

AU - Yu, Yingtian

AU - Wang, Mengyi

AU - Mauro, John C.

AU - Bauchy, Mathieu

PY - 2016/2/9

Y1 - 2016/2/9

N2 - The existence of nanoscale ductility during the fracture of silicate glasses remains controversial. Here, based on molecular dynamics simulations coupled with topological constraint theory, we show that nanoductility arises from the spatial heterogeneity of the atomic network's rigidity. Specifically, we report that localized floppy modes of deformation in underconstrained regions of the glass enable plastic deformations of the network, resulting in permanent change in bond configurations. Ultimately, these heterogeneous plastic events percolate, thereby resulting in a nonbrittle mode of fracture. This suggests that nanoductility is intrinsic to multicomponent silicate glasses having nanoscale heterogeneities.

AB - The existence of nanoscale ductility during the fracture of silicate glasses remains controversial. Here, based on molecular dynamics simulations coupled with topological constraint theory, we show that nanoductility arises from the spatial heterogeneity of the atomic network's rigidity. Specifically, we report that localized floppy modes of deformation in underconstrained regions of the glass enable plastic deformations of the network, resulting in permanent change in bond configurations. Ultimately, these heterogeneous plastic events percolate, thereby resulting in a nonbrittle mode of fracture. This suggests that nanoductility is intrinsic to multicomponent silicate glasses having nanoscale heterogeneities.

UR - http://www.scopus.com/inward/record.url?scp=84958230978&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84958230978&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.93.064202

DO - 10.1103/PhysRevB.93.064202

M3 - Article

AN - SCOPUS:84958230978

VL - 93

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 2469-9950

IS - 6

M1 - 064202

ER -