Research output: Contribution to journal › Article
Superplasticity of Highly Disclinated Graphene. / Kochnev, A.S.; Ovid'ko, I.A.; Semenov, B.N.
In: Reviews on Advanced Materials Science, Vol. 47, No. 1/2, 2016, p. 79-85.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Superplasticity of Highly Disclinated Graphene
AU - Kochnev, A.S.
AU - Ovid'ko, I.A.
AU - Semenov, B.N.
PY - 2016
Y1 - 2016
N2 - Deformation and fracture processes in highly disclinated graphene - graphene containing a high-density ensemble of rectangular disclination quadrupoles - are examined by molecular dynamics simulations. A special disclination mechanism of plastic deformation in graphene is discussed. Also, we consider the effects of disclination-induced curvature in graphene on its mechanical characteristics, namely stress-strain dependence, elastic limit, strain-to-failure and tensile strength. In particular, our simulations reveal that the highly disclinated graphene exhibits superplasticity specified by strain-to-failure ≈ 234%. The key reason of superplasticity is in the presence of pre-existent disclinations that enhance generation of new disclination dipoles and other disclination configurations carrying plastic flow in graphene.
AB - Deformation and fracture processes in highly disclinated graphene - graphene containing a high-density ensemble of rectangular disclination quadrupoles - are examined by molecular dynamics simulations. A special disclination mechanism of plastic deformation in graphene is discussed. Also, we consider the effects of disclination-induced curvature in graphene on its mechanical characteristics, namely stress-strain dependence, elastic limit, strain-to-failure and tensile strength. In particular, our simulations reveal that the highly disclinated graphene exhibits superplasticity specified by strain-to-failure ≈ 234%. The key reason of superplasticity is in the presence of pre-existent disclinations that enhance generation of new disclination dipoles and other disclination configurations carrying plastic flow in graphene.
KW - Deformation
KW - fracture
KW - graphene
KW - molecular dynamics simulations
M3 - Article
VL - 47
SP - 79
EP - 85
JO - Reviews on Advanced Materials Science
JF - Reviews on Advanced Materials Science
SN - 1606-5131
IS - 1/2
ER -
ID: 7652329