Results 261 to 270 of about 10,703 (292)
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Identification of geometrically necessary dislocations in solid phase crystallized poly-Si
Journal of Applied Physics, 2013In this work, the presence of geometrically necessary dislocations (GNDs) in polycrystalline silicon (poly-Si) thin films was detected, suggesting that plastic deformation occurs during the solid phase crystallization (SPC) process of amorphous silicon (a-Si:H).
Law, F. +5 more
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Geometrically necessary dislocations in FCC polycrystalline metallic materials on the mesoscale
Bulletin of the Russian Academy of Sciences: Physics, 2011The dislocation structure of deformed copper alloys doped with Mn and Al was determined by selected area diffraction (SAD), performed using a transmission electron microscope. The scalar dislocation density, the density of geometrically necessary dislocations, and the density of statistically stored dislocations were measured.
E. V. Kozlov +3 more
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Scripta Metallurgica et Materialia, 1995
The evolution of microstructure during plastic deformation has recently been described in terms of grain subdivision involving the formation of rotated volume elements. These elements are ordinary dislocation cells and cell blocks where a cell block contains from one to several cells.
Qing Liu, Niels Hansen
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The evolution of microstructure during plastic deformation has recently been described in terms of grain subdivision involving the formation of rotated volume elements. These elements are ordinary dislocation cells and cell blocks where a cell block contains from one to several cells.
Qing Liu, Niels Hansen
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Strain-Hardening Model of Dual-Phase Steel With Geometrically Necessary Dislocations
Journal of Engineering Materials and Technology, 2018The strain-hardening behavior of metal during the uniaxial tension can be treated as the competing result of generation and annihilation of statistically stored dislocations (SSDs). Geometrically necessary dislocations (GNDs) are generated to accommodate a lattice mismatch and maintain deformation compatibility in dual-phase (DP) steels because of the ...
Chuang Ren +3 more
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Strain gradients and geometrically necessary dislocations in deformed ice single crystals
Scripta Materialia, 2003Abstract Hard X-ray diffraction experiments were performed on ice single crystals deformed in torsion. This work shows the relationship between the density of geometrically necessary dislocations and strain gradients. The torsion strain appears to be totally accommodated by geometrically necessary basal screw dislocations.
Montagnat, Maurine +3 more
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International Journal of Plasticity, 2014
Experiments and numerical simulations of various angles of wedge indenters into face-centered cubic single crystal were performed under plane strain conditions.
C.F.O. Dahlberg +3 more
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Experiments and numerical simulations of various angles of wedge indenters into face-centered cubic single crystal were performed under plane strain conditions.
C.F.O. Dahlberg +3 more
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International Journal of Microstructure and Materials Properties, 2011
There has recently been a strong interest in modelling size-dependent plasticity in metals based on the concept of geometrically necessary dislocations (GNDs). However, the precise manner by which geometrically necessary dislocations interact with second-phase particles remains elusive.
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There has recently been a strong interest in modelling size-dependent plasticity in metals based on the concept of geometrically necessary dislocations (GNDs). However, the precise manner by which geometrically necessary dislocations interact with second-phase particles remains elusive.
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Scripta Materialia, 2008
From local orientation measurements on planar surfaces by means of electron backscattering diffraction, six components of the lattice curvature tensor can be identified. They allow determination of five components of the dislocation density tensor (thus two more than hitherto reported) and, additionally, one difference between two other components ...
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From local orientation measurements on planar surfaces by means of electron backscattering diffraction, six components of the lattice curvature tensor can be identified. They allow determination of five components of the dislocation density tensor (thus two more than hitherto reported) and, additionally, one difference between two other components ...
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An overview of real‐world data sources for oncology and considerations for research
Ca-A Cancer Journal for Clinicians, 2022Lynne Penberthy +2 more
exaly
Advances in the development of personalized neoantigen-based therapeutic cancer vaccines
Nature Reviews Clinical Oncology, 2021Patrick A Ott
exaly