Results 41 to 50 of about 419,752 (350)

Molecular Dynamics Calculations of Grain Boundary Mobility in CdTe

Nanomaterials, 2019
Molecular dynamics (MD) simulations have been applied to study mobilities of Σ3, Σ7 and Σ11 grain boundaries in CdTe. First, an existing MD approach to drive the motion of grain boundaries in face-centered-cubic and body-centered-cubic ...
Rodolfo Aguirre, Sharmin Abdullah, Xiaowang Zhou, David Zubia   +3 more
doaj   +1 more source

Effect of shear-coupled grain boundary motion on coherent precipitation

, 2019
We examine the interaction between precipitates and grain boundaries, which undergo shear-coupled motion. The elastic problem, emerging from grain boundary perturbations and an elastic mismatch strain induced by the precipitates, is analysed.
Spatschek, Robert, Weikamp, Marc
core   +1 more source

The critical current of YBa2Cu3O7-d Low Angle Grain Boundaries [PDF]

, 2003
Transport critical current measurements have been performed on 5 degree [001]-tilt thin film YBa2Cu3O7-delta single grain boundaries with magnetic field rotated in the plane of the film, phi. The variation of the critical current has been determined as a
A. Diaz, F. Kahlmann, J. E. Evetts, J. H. Durrell, M. G. Blamire, M. J. Hogg, M. F. Chisholm, Z. H. Barber   +7 more
core   +3 more sources

Analytical Modeling and Computer Simulation of the Transformation of Ellipsoids Nucleated on Random Parallel Planes [PDF]

Materials Research, 2020
A considerable number of engineering materials is polycrystalline. Cahn proposed analytical expressions for transformations nucleated at the grain faces, triple junctions, and quadruple junctions.
Gabriella Maria Silveira de Sá, Harison da Silva Ventura, Weslley Luiz da Silva Assis, Elena Villa, Paulo Rangel Rios   +4 more
doaj   +1 more source

Grain boundary energies and cohesive strength as a function of geometry

, 2008
Cohesive laws are stress-strain curves used in finite element calculations to describe the debonding of interfaces such as grain boundaries. It would be convenient to describe grain boundary cohesive laws as a function of the parameters needed to ...
D. E. Spearot, D. Wolf, D. Wolf, D. Wolf, E. Iesulauro, E. Iesulauro, F. Sansoz, G. Palumbo, J. P. Hirth, James P. Sethna, M. Falk, M. P. Allen, P. H. Pumphrey, R. J. Harrison, Valerie R. Coffman, W. Bollmann, Y. I. Frenkel, Y. Ishida   +17 more
core   +1 more source

The grain boundary mobility tensor [PDF]

Proceedings of the National Academy of Sciences, 2020
Significance Defects and microstructures have a profound impact on material strength and ductility. Microstructure engineering can enhance/trade-off between these properties. One of the key parameters that dictates microstructure evolution is grain-boundary mobility.
Jian Han, Jian Han, David J. Srolovitz, David J. Srolovitz, Kongtao Chen, Xiaoqing Pan   +5 more
openaire   +6 more sources

Arrangement and Decomposition of Grain Boundary Dislocations: Two-Mode Phase-Field Crystal Simulation

Frontiers in Materials, 2022
The grain-boundary dislocation arrangement and decomposition during constant-volume deformation of a nanoscale bi-crystal system in fcc-structured materials were studied by using the two-mode phase-field crystal (2PFC) method.
Huanqing Li, Xiaona Wang, Haibin Zhang, Xiaolin Tian, Hua Hou, Yuhong Zhao, Yuhong Zhao   +6 more
doaj   +1 more source

A model for grain boundary thermodynamics

RSC Advances, 2020
Density-based grain boundary thermodynamic assessment based on available bulk thermodynamic data teaches a pragmatic way to unlock microstructure defects engineering.
Reza Darvishi Kamachali, Reza Darvishi Kamachali   +1 more
openaire   +4 more sources

Effect of Grain Size on Grain Boundary Segregation Thermodynamics of Phosphorus in Interstitial-Free and 2.25Cr-1Mo Steels

Metals, 2017
Several grain sizes were obtained by heat treatment at different temperatures for interstitial-free (IF) and 2.25Cr-1Mo steels. Samples of the steels with different grain sizes were aged at 600 and 680 °C for IF steel and 520 and 560 °C for 2.25Cr-1Mo ...
Yu Zhao, Shenhua Song, Hong Si, Kai Wang
doaj   +1 more source

From metallic glasses to nanocrystals: Molecular dynamics simulations on the crossover from glass-like to grain-boundary-mediated deformation behaviour

, 2018
Nanocrystalline metals contain a large fraction of high-energy grain boundaries, which may be considered as glassy phases. Consequently, with decreasing grain size, a crossover in the deformation behaviour of nanocrystals to that of metallic glasses has ...
Albe, Karsten, Brink, Tobias
core   +1 more source