Выдержка

A model is suggested describing the effect of grain boundary (GB) sliding on the fracture toughness of ceramic/graphene composites. Within the model, GB sliding near the tip of a large mode I crack initiates the formation of a new nano- or microcrack at an adjacent GB. The new crack merges with the pre-existent one, thus providing crack propagation. For the situation where the suggested crack growth mechanism restricts the fracture toughness of ceramic/graphene composites, we calculated the dependence of the fracture toughness on grain size and lateral dimensions of graphene platelets. The calculations demonstrated that GB-sliding-assisted crack growth reduces fracture toughness, and the effect is strongest for the case where grain size is small and the lateral graphene platelet dimensions are close to the sizes of GBs. The results of the calculations agree with the experimental data on the fracture toughness of alumina/graphene composites.

Язык оригиналаанглийский
Номер статьи103126
ЖурналMechanics of Materials
Том137
Ранняя дата в режиме онлайн19 июл 2019
DOI
СостояниеОпубликовано - 1 окт 2019

Отпечаток

Grain boundary sliding
Graphite
fracture strength
Graphene
sliding
Fracture toughness
graphene
grain boundaries
ceramics
cracks
composite materials
Composite materials
Crack propagation
Platelets
platelets
grain size
Cracks
Aluminum Oxide
microcracks
Microcracks

Предметные области Scopus

  • Контрольно-измерительные инструменты
  • Материаловедение (все)
  • Сопротивление материалов

Цитировать

@article{138fe6dc479d4bd9ba99114732a616d1,
title = "Effect of grain boundary sliding on fracture toughness of ceramic/graphene composites",
abstract = "A model is suggested describing the effect of grain boundary (GB) sliding on the fracture toughness of ceramic/graphene composites. Within the model, GB sliding near the tip of a large mode I crack initiates the formation of a new nano- or microcrack at an adjacent GB. The new crack merges with the pre-existent one, thus providing crack propagation. For the situation where the suggested crack growth mechanism restricts the fracture toughness of ceramic/graphene composites, we calculated the dependence of the fracture toughness on grain size and lateral dimensions of graphene platelets. The calculations demonstrated that GB-sliding-assisted crack growth reduces fracture toughness, and the effect is strongest for the case where grain size is small and the lateral graphene platelet dimensions are close to the sizes of GBs. The results of the calculations agree with the experimental data on the fracture toughness of alumina/graphene composites.",
keywords = "Ceramics, Fracture toughness, Grain boundary sliding, Graphene",
author = "Sheinerman, {A. G.} and Morozov, {N. F.} and Gutkin, {M. Yu.}",
year = "2019",
month = "10",
day = "1",
doi = "10.1016/j.mechmat.2019.103126",
language = "English",
volume = "137",
journal = "Mechanics of Materials",
issn = "0167-6636",
publisher = "Elsevier",

}

Effect of grain boundary sliding on fracture toughness of ceramic/graphene composites. / Sheinerman, A. G.; Morozov, N. F.; Gutkin, M. Yu.

В: Mechanics of Materials, Том 137, 103126, 01.10.2019.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - Effect of grain boundary sliding on fracture toughness of ceramic/graphene composites

AU - Sheinerman, A. G.

AU - Morozov, N. F.

AU - Gutkin, M. Yu.

PY - 2019/10/1

Y1 - 2019/10/1

N2 - A model is suggested describing the effect of grain boundary (GB) sliding on the fracture toughness of ceramic/graphene composites. Within the model, GB sliding near the tip of a large mode I crack initiates the formation of a new nano- or microcrack at an adjacent GB. The new crack merges with the pre-existent one, thus providing crack propagation. For the situation where the suggested crack growth mechanism restricts the fracture toughness of ceramic/graphene composites, we calculated the dependence of the fracture toughness on grain size and lateral dimensions of graphene platelets. The calculations demonstrated that GB-sliding-assisted crack growth reduces fracture toughness, and the effect is strongest for the case where grain size is small and the lateral graphene platelet dimensions are close to the sizes of GBs. The results of the calculations agree with the experimental data on the fracture toughness of alumina/graphene composites.

AB - A model is suggested describing the effect of grain boundary (GB) sliding on the fracture toughness of ceramic/graphene composites. Within the model, GB sliding near the tip of a large mode I crack initiates the formation of a new nano- or microcrack at an adjacent GB. The new crack merges with the pre-existent one, thus providing crack propagation. For the situation where the suggested crack growth mechanism restricts the fracture toughness of ceramic/graphene composites, we calculated the dependence of the fracture toughness on grain size and lateral dimensions of graphene platelets. The calculations demonstrated that GB-sliding-assisted crack growth reduces fracture toughness, and the effect is strongest for the case where grain size is small and the lateral graphene platelet dimensions are close to the sizes of GBs. The results of the calculations agree with the experimental data on the fracture toughness of alumina/graphene composites.

KW - Ceramics

KW - Fracture toughness

KW - Grain boundary sliding

KW - Graphene

UR - http://www.scopus.com/inward/record.url?scp=85069839997&partnerID=8YFLogxK

U2 - 10.1016/j.mechmat.2019.103126

DO - 10.1016/j.mechmat.2019.103126

M3 - Article

AN - SCOPUS:85069839997

VL - 137

JO - Mechanics of Materials

JF - Mechanics of Materials

SN - 0167-6636

M1 - 103126

ER -