A strain gradient crystal plasticity analysis of grain size effects in polycrystals

2007 ◽  
Vol 26 (2) ◽  
pp. 313-324 ◽  
Author(s):  
Ulrik Borg
Keyword(s):  
Grain Size ◽  
Crystal Plasticity ◽  
Strain Gradient ◽  
Size Effects ◽  
Grain Size Effects

Strain-gradient modelling of grain size effects on fatigue of CoCr alloy

2014 ◽  
Vol 78 ◽  
pp. 341-353 ◽  
Author(s):  
C.A. Sweeney ◽  
B. O’Brien ◽  
F.P.E. Dunne ◽  
P.E. McHugh ◽  
S.B. Leen
Keyword(s):  
Grain Size ◽  
Strain Gradient ◽  
Size Effects ◽  
Cocr Alloy ◽  
Grain Size Effects

Scale-Dependent Crack Modeling for Investigation the Effect of Geometrically Necessary Dislocations in Micro/Nano Grain Size of Copper

2016 ◽  
Vol 15 ◽  
pp. 1-16 ◽  
Author(s):  
Amin Zaami ◽  
Ali Shokuhfar
Keyword(s):  
Grain Size ◽  
Stress Concentration ◽  
Strain Gradient ◽  
Stress Concentration Factor ◽  
Size Effects ◽  
Crack Tip ◽  
Length Scale ◽  
State Variables ◽  
Dependent Model ◽  
Homogeneous Strain

In this study, a scale-dependent model is employed to investigate the size effects of copper on the behavior of the crack-tip. This model includes the homogeneous and non-homogeneous strain hardening based on the wavelet interpretation of size effect. Introducing additional micro/nano structural considerations together with decreasing grain size, different size effects can be obtained. As the size dependency is not taken into account in conventional plasticity, an enhanced theory which is related to the strain gradient introduces a length scale will give more realistic representations of state variables near the crack-tip. Accordingly, the contribution of geometrically necessary dislocations (GNDs) activity on strengthening and stress concentration factor is identified in the crack-tip. Finally, the affected zone which is dominated by presence of GNDs is identified

Grain-Size Effects during Dynamic Recrystallization of Nickel

Metal Science ◽  
1974 ◽  
Vol 8 (1) ◽  
pp. 325-331 ◽  
Author(s):  
J. P. Sah ◽  
G. J. Richardson ◽  
C. M. Sellars
Keyword(s):  
Grain Size ◽  
Dynamic Recrystallization ◽  
Size Effects ◽  
Grain Size Effects

Grain Size Effects in Mn-Modified 0.67BiFeO3–0.33BaTiO3 Ceramics

2021 ◽  
Author(s):  
Yajun Yue ◽  
Xinzhao Xu ◽  
Man Zhang ◽  
Zhongna Yan ◽  
Vladimir Koval ◽  
...  
Keyword(s):  
Grain Size ◽  
Size Effects ◽  
Grain Size Effects

Hall measurements and grain‐size effects in polycrystalline silicon

1980 ◽  
Vol 37 (6) ◽  
pp. 544-546 ◽  
Author(s):  
Amal K. Ghosh ◽  
Albert Rose ◽  
H. Paul Maruska ◽  
Daniel J. Eustace ◽  
Tom Feng
Keyword(s):  
Grain Size ◽  
Size Effects ◽  
Polycrystalline Silicon ◽  
Hall Measurements ◽  
Grain Size Effects
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