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Grain Boundary Sliding at Serrated Grain Boundaries
Advanced Performance Materials, 1997A constitutive model is developed for grain boundary sliding (GBS) at serrated grain boundaries. Based on a previously developed GBS model, using the dynamics of grain boundary dislocation pile-up, the present model takes the average of the sliding rate over the characteristic dimensions of grain boundary serrations.
X. J. Wu, A.K. Koul
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Advanced Energy Materials, 2019
The performance of perovskite solar cells is sensitive to detrimental defects, which are prone to accumulate at the interfaces and grain boundaries of bulk perovskite films.
Pengchen Zhu +6 more
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The performance of perovskite solar cells is sensitive to detrimental defects, which are prone to accumulate at the interfaces and grain boundaries of bulk perovskite films.
Pengchen Zhu +6 more
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Mathematical Models and Methods in Applied Sciences, 2001
Evolution and trend to equilibrium of a (planar) network of grain boundaries subject to curvature driven growth is established under the assumption that the system is initially close to some equilibrium configuration. Curvature driven growth is the primary mechanism in processing polycrystalline materials to achieve desired texture, ductility ...
Chun Liu, David Kinderlehrer
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Evolution and trend to equilibrium of a (planar) network of grain boundaries subject to curvature driven growth is established under the assumption that the system is initially close to some equilibrium configuration. Curvature driven growth is the primary mechanism in processing polycrystalline materials to achieve desired texture, ductility ...
Chun Liu, David Kinderlehrer
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Impact of grain boundary character on grain boundary kinetics
Zeitschrift für Metallkunde, 2003Abstract The current research on grain boundary dynamics in metals is reviewed. The boundary dynamics, i. e., the boundary reaction to applied forces, is strongly dependent on the grain boundary character, which is commonly reduced to the orientation relationship between adjacent grains and impurity segregation at the boundary.
G. Gottstein +2 more
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Dislocations in grain boundaries and grain boundary sliding
Acta Metallurgica, 1967Abstract The Burgers vectors of grain boundary dislocations were analyzed by transmission electron microscopy in creep tested iron and iron alloys. The analysis indicates that the dislocations retain their original Burgers vectors when joining grain boundaries and remain undissociated. It is suggested that grain boundary sliding in creep is caused by
Y Ishida, M. Henderson Brown
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Advanced Energy Materials, 2018
The phase instability and large energy loss are two obstacles to achieve stable and efficient inorganic‐CsPbI3−xBrx perovskite solar cells. In this work, stable cubic perovskite (α)‐phase CsPbI2Br is successfully achieved by Pb(Ac)2 functioning at the ...
Zhaobing Zeng +9 more
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The phase instability and large energy loss are two obstacles to achieve stable and efficient inorganic‐CsPbI3−xBrx perovskite solar cells. In this work, stable cubic perovskite (α)‐phase CsPbI2Br is successfully achieved by Pb(Ac)2 functioning at the ...
Zhaobing Zeng +9 more
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Local investigation of grain boundaries by grain-boundary EBIC
Physica Status Solidi (a), 1993Grain-boundary (GB) EBIC is an alternative EBIC geometry without a Schottky contact or p–n junction but with ohmic contacts on either side of a GB which itself acts as a charge collecting plane. The basic properties of the GB EBIC signal in the short-circuit mode and with application of an external bias are presented.
J. Palm, H. Alexander
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Advances in Materials, 2018
The development of materials with high efficiency and stable signal output in a bent state is important for flexible electronics. Grain boundaries provide lasting inspiration and a promising avenue for designing advanced functionalities using ...
Lili Wang +5 more
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The development of materials with high efficiency and stable signal output in a bent state is important for flexible electronics. Grain boundaries provide lasting inspiration and a promising avenue for designing advanced functionalities using ...
Lili Wang +5 more
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Grain boundary segregation produced by grain boundary movement
Scripta Metallurgica, 1983Experimental evidence of grain boundary enrichment is given in a temperature region where the bulk diffusion is negligible. The phenomenon can be explained by supposing that the grain boundaries gather the dissolved atoms while passing through the grains.
L. Uray, M. Menyhard
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Journal of Materials Science, 2006
We study the process of grain boundary sliding through the motion of grain boundary dislocations, utilizing molecular dynamics and embedded atom method (EAM) interatomic potentials. For a Σ = 5 [001]{310} symmetrical tilt boundary in bcc Fe, the sliding process was found to occur through the nucleation and glide of partial grain boundary dislocations ...
Diana Farkas, Brian Hyde, Joshua Monk
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We study the process of grain boundary sliding through the motion of grain boundary dislocations, utilizing molecular dynamics and embedded atom method (EAM) interatomic potentials. For a Σ = 5 [001]{310} symmetrical tilt boundary in bcc Fe, the sliding process was found to occur through the nucleation and glide of partial grain boundary dislocations ...
Diana Farkas, Brian Hyde, Joshua Monk
openaire +2 more sources