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Determining Burgers vectors and geometrically necessary dislocation densities from atomistic data
Modelling and Simulation in Materials Science and Engineering, 2010We describe a novel analysis method to quantify the Burgers vectors of dislocations in atomistic ensembles and to calculate densities of geometrically necessary and statistically stored dislocations. This is accomplished by combining geometrical methods to determine dislocation cores and the slip vector analysis, which yields the relative slip of the ...
Jun Hua, Alexander Hartmaier
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Materials Science & Engineering: A, 2021
The evolution of geometrically necessary dislocation density (GND) at the γ and primary γ′ interface during tensile deformation of turbine disk alloy was studied. Extensive electron microscopy analysis (i.e.
P. Jena +6 more
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The evolution of geometrically necessary dislocation density (GND) at the γ and primary γ′ interface during tensile deformation of turbine disk alloy was studied. Extensive electron microscopy analysis (i.e.
P. Jena +6 more
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, 2021
The effects of temperature and load on fretting fatigue induced geometrically necessary dislocation (GND) distribution in titanium alloy are studied by electron back-scattered diffraction (EBSD) in this paper. Fretting fatigue experiments under different
Qi‐Nan Han +9 more
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The effects of temperature and load on fretting fatigue induced geometrically necessary dislocation (GND) distribution in titanium alloy are studied by electron back-scattered diffraction (EBSD) in this paper. Fretting fatigue experiments under different
Qi‐Nan Han +9 more
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Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2007
A unified physically based microstructural representation of f.c.c. crystalline materials has been developed and implemented to investigate the microstructural behaviour of f.c.c. crystalline aggregates under inelastic deformations. The proposed framework is based on coupling a multiple-slip crystal plasticity formulation to three distinct dislocation ...
O Rezvanian, M.A Zikry, A.M Rajendran
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A unified physically based microstructural representation of f.c.c. crystalline materials has been developed and implemented to investigate the microstructural behaviour of f.c.c. crystalline aggregates under inelastic deformations. The proposed framework is based on coupling a multiple-slip crystal plasticity formulation to three distinct dislocation ...
O Rezvanian, M.A Zikry, A.M Rajendran
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, 2021
This paper reports the evolution of GND tensor in 316 austenitic steel at the plastic stage. A significant increase of five GND tensors can be observed. The variations of average values of both positive and negative GND tensors were very symmetric.
Xiao Wang, Z. Zhou, Sheng Liu, M. Huang
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This paper reports the evolution of GND tensor in 316 austenitic steel at the plastic stage. A significant increase of five GND tensors can be observed. The variations of average values of both positive and negative GND tensors were very symmetric.
Xiao Wang, Z. Zhou, Sheng Liu, M. Huang
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2020
<p>The dynamics of several geophysical phenomena, such as post-seismic deformation and post-glacial isostatic readjustment, are inferred to be controlled by the transient rheology of olivine in Earth&#8217;s mantle. However, the physical mechanism(s) that underlie(s) this behavior remain(s) relatively unknown, and most ...
Christopher Thom +3 more
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<p>The dynamics of several geophysical phenomena, such as post-seismic deformation and post-glacial isostatic readjustment, are inferred to be controlled by the transient rheology of olivine in Earth&#8217;s mantle. However, the physical mechanism(s) that underlie(s) this behavior remain(s) relatively unknown, and most ...
Christopher Thom +3 more
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Materials Characterization, 2020
Deformation of single phase and two phase materials can be heterogeneous depending on the grain size distribution, orientation of the grains, amount and arrangement of the second phase and phase transformation during plastic deformation and twins.
A. Kundu, D. Field
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Deformation of single phase and two phase materials can be heterogeneous depending on the grain size distribution, orientation of the grains, amount and arrangement of the second phase and phase transformation during plastic deformation and twins.
A. Kundu, D. Field
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Materials Science Forum, 2011
The accumulation of dislocations around hard particles such as martensite in Dual Phase steel has a prominent influence on the mechanical properties of multiphase steels. The origin of these so-called Geometrically Necessary Dislocations (GNDs) is either due to the transformation strain, or to strain gradients that arise during deformation.
Moerman, J. +3 more
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The accumulation of dislocations around hard particles such as martensite in Dual Phase steel has a prominent influence on the mechanical properties of multiphase steels. The origin of these so-called Geometrically Necessary Dislocations (GNDs) is either due to the transformation strain, or to strain gradients that arise during deformation.
Moerman, J. +3 more
openaire +2 more sources