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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Paxton, Anthony Thomas
Imperial College London
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2020Ising-like models for stacking faults in a free electron metalcitations
- 2017Theoretical evaluation of the role of crystal defects on local equilibrium and effective diffusivity of hydrogen in ironcitations
- 2017Hydrogen embrittlement II.citations
- 2013Analysis of a carbon dimer bound to a vacancy in iron using density functional theory and a tight binding modelcitations
- 2010Microscopic origin of channeled flow in lamellar titanium aluminidecitations
- 2005Stability of Sr adatom model structures for SrTiO3(001) surface reconstructionscitations
- 2005Theory of the near K-edge structure in electron energy loss spectroscopycitations
- 2004Bismuth embrittlement of copper is an atomic size effectcitations
- 2001Material effects on stress-induced defect generation in trenched silicon-on-insulator structurescitations
- 2000Effect of relaxation on the oxygen K-edge electron energy-loss near-edge structure in yttria-stabilized zirconiacitations
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article
Microscopic origin of channeled flow in lamellar titanium aluminide
Abstract
We employ a quantum mechanical bond order potential in an atomistic simulation of channeled flow. We show that the original hypothesis that this is achieved by a cooperative deployment of slip and twinning is correct, first because a twin is able to "protect" a 60° ordinary dislocation from becoming sessile, and second because the two processes are found to be activated by Peierls stresses of similar magnitude. In addition we show an explicit demonstration of the lateral growth of a twin, again at a similar level of stress. Thus these simultaneous processes are shown to be capable of channeling deformation into the observed state of plane strain in so-called "A"-oriented mechanical testing of titanium aluminide superalloy.