Interaction of Glide Dislocations with Extended Precipitates in Mg-Nd alloys
Scientific Reports, 2018 The unit processes of precipitate-dislocation interaction in dilute Mg-Nd alloys are elucidated through in situ indentation experiments in TEM. Results suggest that pinned dislocations can glide along the broad facets of extended β1 precipitates, a ...
Zhihua Huang +2 more
doaj +1 more source
Influence of non-glide stresses on the peierls energy of screw dislocations
Nihon Kikai Gakkai ronbunshu, 2014 We investigate the influence of non-glide stresses on the Peierls energy of screw dislocation by using Nudged-Elastic-Band method. The influence of the applied non-glide stress fields on the Peierls energy of a screw dislocation is clearly observed ...
Keisuke KINOSHITA +5 more
doaj +1 more source
A discrete dislocation dynamics study aiming at understanding fatigue crack initiation [PDF]
, 2003 We use discrete dislocation dynamics to build a model for fatigue crack initiation in a surface grain. Dislocations are modeled as line singularities in an elastic medium where they can be generated from pre-existing sources, glide or annihilate.
Giessen, Erik van der, +12 more
core +3 more sources
Metals, 2018 The effects of warm rolling reduction ratio ranging from 20% to 55% on microstructure evolution, the tensile deformation mechanism, and the associated mechanical properties of an Fe-30Mn-4Si-2Al TRIP/TWIP steel were studied.
Yanchun Dong +10 more
doaj +1 more source
Strain localization in ultramylonitic marbles by simultaneous activation of dislocation motion and grain boundary sliding (Syros, Greece) [PDF]
Solid Earth, 2016 Extreme strain localization occurred in the centre of the cross-cutting element of a flanking structure in almost pure calcite marbles from Syros, Greece.
A. Rogowitz, J. C. White, B. Grasemann
doaj +1 more source
Unveiling the Mechanisms of High-Temperature 1/2[111] Screw Dislocation Glide in Iron–Carbon Alloys
Crystals, 2022 We have developed a self-consistent model for predicting the velocity of 1/2[111] screw dislocation in binary iron–carbon alloys gliding by a high-temperature Peierls mechanism.
Ivaylo Hristov Katzarov +1 more
doaj +1 more source
Tensile response of passivated films with climb-assisted dislocation glide
, 2012 The tensile response of single crystal films passivated on two sides is analysed using climb enabled discrete dislocation plasticity. Plastic deformation is modelled through the motion of edge dislocations in an elastic solid with a lattice resistance to
Geers, MGD Marc +5 more
core +2 more sources
Dislocation Burgers vector and the Peach–Koehler force: a review
Journal of Materials Research and Technology, 2019 Different definitions of the Burgers vector and the corresponding construction of the Burgers circuit for dislocation loops and straight dislocations, created by the displacement discontinuity imposed across different surface cuts are reviewed.
Vlado A. Lubarda
doaj +1 more source
Multiscale modeling of upper mantle plasticity: From single-crystal rheology to multiphase aggregate deformation [PDF]
, 2014 We report a first application of an improved second-order (SO) viscoplastic self-consistent model for multiphase aggregates, applied to an olivine + diopside aggregate as analogue for a dry upper mantle peridotite deformed at 10 15 s 1 shear strain rate ...
CORDIER, Patrick +6 more
core +1 more source
Relaxation of thermal stress by dislocation motion in passivated metal interconnects [PDF]
, 2004 The development and relaxation of stress in metal interconnects strained by their surroundings (substrate and passivation layers) is predicted by a discrete dislocation analysis.
Giessen, Erik van der, +9 more
core +2 more sources