Grain boundary mediated plasticity: The role of grain boundary atomic structure and thermal activation

Dmitry Terentyev; Alexander Bakaev; A. Serra; F.  Pavia; K.L. Baker; N. Anento

doi:10.1016/j.scriptamat.2017.10.002

Grain boundary mediated plasticity: The role of grain boundary atomic structure and thermal activation

Dmitry Terentyev, Alexander Bakaev, A. Serra, F. Pavia, K.L. Baker, N. Anento

Research output › peer-review

Abstract

The interaction of dislocation pile-ups with several tilt grain boundaries (GB) is studied in copper by using a hybrid continuum-atomistic approach. The effects of temperature, pile-up intensity and GB structure on absorption and transmission of slip as a function of local stress state are explored. By considering several high-angle GBswith different misorientation angles, we demonstrate that GB atomic structure primarily defines its ability to accommodate incoming pile-up dislocations, thus limiting the direct transmission of pile-ups through the interface.

Original language	English
Journal	Scripta Materialia
Volume	145
Issue number	1-4
DOIs	https://doi.org/10.1016/j.scriptamat.2017.10.002
State	Published - 4 Oct 2017

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10.1016/j.scriptamat.2017.10.002

Cite this

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title = "Grain boundary mediated plasticity: The role of grain boundary atomic structure and thermal activation",

abstract = "The interaction of dislocation pile-ups with several tilt grain boundaries (GB) is studied in copper by using a hybrid continuum-atomistic approach. The effects of temperature, pile-up intensity and GB structure on absorption and transmission of slip as a function of local stress state are explored. By considering several high-angle GBswith different misorientation angles, we demonstrate that GB atomic structure primarily defines its ability to accommodate incoming pile-up dislocations, thus limiting the direct transmission of pile-ups through the interface.",

keywords = "Dislocations, grain boundary, plasticity",

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T1 - Grain boundary mediated plasticity: The role of grain boundary atomic structure and thermal activation

AU - Terentyev, Dmitry

AU - Bakaev, Alexander

AU - Serra, A.

AU - Pavia, F.

AU - Baker, K.L.

AU - Anento, N.

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N2 - The interaction of dislocation pile-ups with several tilt grain boundaries (GB) is studied in copper by using a hybrid continuum-atomistic approach. The effects of temperature, pile-up intensity and GB structure on absorption and transmission of slip as a function of local stress state are explored. By considering several high-angle GBswith different misorientation angles, we demonstrate that GB atomic structure primarily defines its ability to accommodate incoming pile-up dislocations, thus limiting the direct transmission of pile-ups through the interface.

AB - The interaction of dislocation pile-ups with several tilt grain boundaries (GB) is studied in copper by using a hybrid continuum-atomistic approach. The effects of temperature, pile-up intensity and GB structure on absorption and transmission of slip as a function of local stress state are explored. By considering several high-angle GBswith different misorientation angles, we demonstrate that GB atomic structure primarily defines its ability to accommodate incoming pile-up dislocations, thus limiting the direct transmission of pile-ups through the interface.

KW - Dislocations

KW - grain boundary

KW - plasticity

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/26870916

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DO - 10.1016/j.scriptamat.2017.10.002

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JO - Scripta Materialia

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