Search Results - "TANGUY, Döme"

Segregation of hydrogen to defects in nickel using first-principles calculations: The case of self-interstitials and cavities by Connétable, Damien, Wang, Yu, Tanguy, Döme

“…A detailed first-principles study of the interactions of hydrogen with different point defects in Ni is presented. In particular we discuss the trapping of…”
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Dislocation/hydrogen interaction mechanisms in hydrided nanocrystalline palladium films by Amin-Ahmadi, Behnam, Connétable, Damien, Fivel, Marc, Tanguy, Döme, Delmelle, Renaud, Turner, Stuart, Malet, Loic, Godet, Stephane, Pardoen, Thomas, Proost, Joris, Schryvers, Dominique, Idrissi, Hosni

“…The nanoscale plasticity mechanisms activated during hydriding cycles in sputtered nanocrystalline Pd films have been investigated ex-situ using advanced…”
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H effects in Al-Mg, Al-Zn-Mg alloys and in Al: experiments, continuum and atomistic modeling by Tanguy, D

“…Stress corrosion cracking of pure Al5%Mg is studied. It was shown by slow strain rate tests, constant force, and cyclic traction-traction tests in a simulated…”
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Dislocation structure behind a shock front in fcc perfect crystals: Atomistic simulation results by GERMANN, Timothy C, TANGUY, Döme, HOLIAN, Brad Lee, LOMDAHL, Peter S, MARESCHAL, Michel, RAVELO, Ramon

“…Large-scale molecular dynamics simulations are used to investigate the dislocation structure behind a shock front in perfect fee crystals. Shock compression in…”
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Cohesive stress heterogeneities and the transition from intrinsic ductility to brittleness by Tanguy, Döme

“…The influence of nanoscale cavities on the fracture of the Σ33{554}[110] symmetrical tilt grain boundary is studied by atomistic simulations. The crack…”
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Stability of vacancy-hydrogen clusters in nickel from first-principles calculations by Tanguy, Döme, Wang, Yu, Connétable, Damien

“…The interactions of hydrogen (H) atoms with vacancies are investigated by means of ab initio calculations. The lowest segregation energies are −0.27 and…”
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Influence of trap connectivity on H diffusion: Vacancy trapping by Wang, Yu, Connétable, D., Tanguy, D.

“…A model is given for the effective diffusion of interstitial solutes in the presence of traps. It goes beyond Oriani's by taking into account, in a simple way,…”
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Site stability and pipe diffusion of hydrogen under localised shear in aluminium by Wang, Y., Connétable, D., Tanguy, D.

“…This paper studies the effect of a plastic shear on the tetrahedral vs. octahedral site stability for hydrogen, in aluminium. Based on Density Functional…”
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Effect of sub-surface hydrogen on intrinsic crack tip plasticity in aluminium by Wang, Y., Connétable, D., Tanguy, D.

“…The effects of sub-surface hydrogen and mixed mode loading on dislocation emission in aluminium are studied using a combination of techniques including crack…”
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Equilibrium vacancy concentrations in Al- Σ = 33 ( 554 ) [ 1 1 ¯ 0 ] by grand canonical Monte Carlo simulations by Vamvakopoulos, Emmanouil, Tanguy, Döme

“…A Monte Carlo simulation of equilibrium thermal vacancies is extended to grain boundaries in Al. The vacancy localization is explored by intensive…”
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Heterogeneity of grain boundaries in 5xxx and 7xxx aluminum alloys and its influence on intergranular toughness by Ben Ali, N., Estevez, R., Tanguy, D.

“…A numerical study of intergranular failure assisted by hydrogen embrittlement of precipitates along grain boundaries, as observed in aluminum alloys of the…”
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Effects of microstructure on hydrogen-induced cracking in aluminum alloys by Ali, N. Ben, Tanguy, D., Estevez, R.

“…Studying hydrogen–microstructure interactions is difficult in Al alloys because H charging is usually coupled with some dissolution of the surface in aqueous…”
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Dislocation emission from a crack under mixed mode loading studied by molecular statics by Gouriet, K., Tanguy, D.

“…The dislocation emission surface in (k I , k II , k III ) space is calculated by means of atomistic simulations for the {111}⟨110⟩ crack in Al. For each…”
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Defect hardening modeled in 2D discrete dislocation dynamics by Razafindrazaka, M., Tanguy, D., Delafosse, D.

“…Two-dimensional discrete dislocation dynamics simulations are used to model the plastic deformation of an fcc metallic material containing large densities of…”
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Superabundant vacancies in a metal-hydrogen system : Monte Carlo simulations by TANGUY, D, MARESCHAL, M

“…An equilibrium Monte Carlo simulation capable of treating superabundant vacancy formation and ordering in metal-hydrogen systems (M-H) is developed. It…”
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Plasticity localization ahead of a crack tip modeled by 2D discrete dislocation dynamics by Tanguy, D., Delafosse, D., Razafindrazaka, M.

“…The formation of a plastic zone in the presence of a crack, in a bicrystal, is modeled by two-dimensional discrete dislocation dynamics. The influence of a…”
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Atomistic modelling of hydrogen segregation to the Σ9{2 2 1}[1 1 0] symmetric tilt grain boundary in Al by Shen, X.J., Tanguy, D., Connétable, D.

“…The paper establishes a quantitative link between the bulk hydrogen content and the local concentration in the core of the symmetric tilt grain boundary in Al…”
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Constrained molecular dynamics for quantifying intrinsic ductility versus brittleness by Tanguy, D.

“…Evaluating the critical load levels for intrinsic ductility and brittle propagation is a first, but necessary, step for modeling semibrittle crack propagation…”
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Hydrogen influence on diffusion in nickel from first-principles calculations by Wang, Yu, Connétable, D., Tanguy, D.

“…We propose a method to evaluate the diffusion coefficient of vacancy-hydrogen clusters (VHn) in metals. The key is a good separation of time scales between H…”
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