Grain size effect on crack blunting in nanocrystalline materials

2009 ◽  
Vol 60 (8) ◽  
pp. 627-630 ◽  
Author(s):  
I.A. Ovid’ko ◽  
A.G. Sheinerman
Keyword(s):  
Grain Size ◽  
Size Effect ◽  
Nanocrystalline Materials ◽  
Grain Size Effect ◽  
Crack Blunting

Crack Blunting through Lattice Dislocation Slip in Nanocrystalline and Ultrafine-Grained Materials

2009 ◽  
Vol 633-634 ◽  
pp. 55-62
Author(s):  
Ilya A. Ovidko ◽  
A.G. Sheinerman
Keyword(s):  
Grain Size ◽  
Size Effect ◽  
Stress Fields ◽  
Dislocation Slip ◽  
Cubic Phase ◽  
Grain Size Effect ◽  
Dislocation Emission ◽  
Ultrafine Grained ◽  
Ultrafine Grained Materials ◽  
Crack Blunting

The grain size effect on blunting of cracks in nanocrystalline and ultrafine-grained materials (UFG) is theoretically described. Within our description, lattice dislocations emitted from cracks are stopped at grain boundaries. The stress fields of these dislocations suppress further dislocation emission from cracks in nanocrystalline and UFG materials, and the suppression depends on grain size. The dependences of the number of dislocations emitted by a crack on grain size (ranging from 10 to 300 nm) in Cu and 3C-SiC (the cubic phase of silicon carbide) are calculated which characterize the grain size effect on crack blunting that crucially influences ductility of these materials.

Landau-Ginzburg-Devonshire Theory of the Grain Size Effect on the Ferroelectricity in BaTiO 3 Nanoceramics

2020 ◽  
Author(s):  
Kum-Ok Jang ◽  
Il-Hwan Kim ◽  
Il-Hun Kim ◽  
Kye-Ryong Sin ◽  
Chol-Jin Kim
Keyword(s):  
Grain Size ◽  
Size Effect ◽  
Grain Size Effect

scholarly journals Finite element analysis of the grain size effect on diffusion in polycrystalline materials

2014 ◽  
Vol 95 ◽  
pp. 187-191 ◽  
Author(s):  
V. Lacaille ◽  
C. Morel ◽  
E. Feulvarch ◽  
G. Kermouche ◽  
J.-M. Bergheau
Keyword(s):  
Finite Element Analysis ◽  
Grain Size ◽  
Finite Element ◽  
Size Effect ◽  
Polycrystalline Materials ◽  
Grain Size Effect ◽  
Element Analysis

scholarly journals Grain size effect on radiation tolerance of nanocrystalline Mo

2016 ◽  
Vol 123 ◽  
pp. 90-94 ◽  
Author(s):  
G.M. Cheng ◽  
W.Z. Xu ◽  
Y.Q. Wang ◽  
A. Misra ◽  
Y.T. Zhu
Keyword(s):  
Grain Size ◽  
Size Effect ◽  
Radiation Tolerance ◽  
Grain Size Effect
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