Results 1 to 10 of about 2,703 (119)
Dislocation Creep: Climb and Glide in the Lattice Continuum
Crystals, 2017 A continuum theory for high temperature creep of polycrystalline solids is developed. It includes the relevant deformation mechanisms for diffusional and dislocation creep: elasticity with eigenstrains resulting from vacancy diffusion, dislocation climb ...
Sinisa Dj Mesarovic
exaly +3 more sources
Journal of Materials Research and Technology, 2023 Dislocation-dominated plastic deformation in austenitic NiTi alloys is highly detrimental and it could be suppressed by precipitation of Ni4Ti3. Additionally, at a certain temperature range, not only Ni4Ti3 precipitate but also the B19’ martensite ...
Zhu Li +5 more
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An Experimental Study of Dislocation Dynamics in GaN
Micromachines, 2023 The dynamics of dislocations introduced through indentation or scratching at room temperature into a few GaN layers that were grown using the HVPE, MOCVD and ELOG methods and had different dislocation densities were studied via the electron-beam-induced ...
Eugene B. Yakimov +2 more
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PLoS ONE, 2023 The fundamental properties of dislocations in diamond-structured Si and sphalerite-structured GaAs, InP and CdTe are investigated based on lattice theory of dislocation, hoping to provide some theoretical references in improving the properties of related
Huili Zhang
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Finite-temperature screw dislocation core structures and dynamics in α-titanium
npj Computational Materials, 2023 A multiscale approach based on molecular dynamics (MD) and kinetic Monte Carlo (kMC) methods is developed to simulate the dynamics of an 〈a〉 screw dislocation in α-Ti.
Anwen Liu +3 more
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The core structure of screw dislocations with [001] Burgers vector in Mg$_2$SiO$_4$ olivine
Comptes Rendus. Physique, 2021 In this study, we report atomistic calculations of the core structure of screw dislocations with [001] Burgers vector in Mg$_{{2}}$SiO$_{{4}}$ olivine.
Mahendran, Srinivasan +2 more
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npj Computational Materials, 2023 Refractory multi-principal element alloys (RMPEAs) are promising materials for high-temperature structural applications. Here, we investigate the role of short-range ordering (SRO) on dislocation glide in the MoNbTi and TaNbTi RMPEAs using a multi-scale ...
Hui Zheng +8 more
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Dislocation glides in monolayered granular media: Effect of lattice constant [PDF]
EPJ Web of ConferencesA recent study [1] demonstrated that granular crystals containing a single dislocation exhibit dislocation glide analogous to that observed in atomic-scale crystals, resulting in plastic deformation at yield stresses several orders of magnitude lower ...
Nakai Fumiaki +4 more
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Materials Research Letters, 2020 The mechanical properties of high-entropy alloys (HEAs) are still not deeply understood. Detailed knowledge of the strengthening mechanism, especially, the atomistic origin of solid solution hardening and its interplay with dislocation plasticity is ...
Subin Lee +7 more
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Statistical mechanics of kinks on a gliding screw dislocation
Physical Review Research, 2020 The ability of a body-centered-cubic metal to deform plastically is limited by the thermally activated glide motion of screw dislocations, which are line defects with a mobility exhibiting complex dependence on temperature, stress, and dislocation ...
Max Boleininger +5 more
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