TY - JOUR
T1 - Grain boundary dynamics of SiC bicrystals under shear deformation
AU - Bringuier, Stefan
AU - Manga, Venkateswara Rao
AU - Runge, Keith A
AU - Deymier, Pierre
AU - Muralidharan, Krishna
N1 - Funding Information:
The author S.B. gratefully acknowledges the Thomas G. Chapman Fellowship awarded by the College of Engineering at the University of Arizona.
Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/5/4
Y1 - 2015/5/4
N2 - The dynamics of SiC grain boundaries under shear are characterized using molecular dynamics simulations. At low-temperatures, low-angle grain boundaries exhibit stick-slip behavior due to athermal climb of edge dislocations along the grain boundary. With increasing temperature stick-slip becomes less pronounced due to dislocation glide, and at high-temperatures, structural disordering of the low-angle grain boundary inhibits stick-slip. In contrast, structural disordering of the high-angle grain boundary is induced under shear even at low temperatures, resulting in a significantly dampened stick-slip behavior.
AB - The dynamics of SiC grain boundaries under shear are characterized using molecular dynamics simulations. At low-temperatures, low-angle grain boundaries exhibit stick-slip behavior due to athermal climb of edge dislocations along the grain boundary. With increasing temperature stick-slip becomes less pronounced due to dislocation glide, and at high-temperatures, structural disordering of the low-angle grain boundary inhibits stick-slip. In contrast, structural disordering of the high-angle grain boundary is induced under shear even at low temperatures, resulting in a significantly dampened stick-slip behavior.
KW - Athermal dislocation climb
KW - Bicrystals
KW - Silicon carbide
KW - Slide-climb
KW - Stick-slip
UR - http://www.scopus.com/inward/record.url?scp=84961290879&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84961290879&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2015.03.022
DO - 10.1016/j.msea.2015.03.022
M3 - Article
AN - SCOPUS:84961290879
SN - 0921-5093
VL - 634
SP - 161
EP - 166
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
ER -