Evolutions in Microstructure and Mechanical Properties of Ultra-Thin Oligocrystalline Invar Alloy Strip During Cold Rolling. [PDF]
Materials (Basel)Yang J +6 more
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Strength-plasticity synergy from ambient to high temperature via gradient-ordering in boride-reinforced WTaV medium-entropy alloy. [PDF]
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Character and Distribution of Geometrically Necessary Dislocations in Polycrystalline Tantalum
Microscopy and Microanalysis, 2023Abstract Geometrically necessary dislocations (GNDs) play a key role in accommodating strain incompatibility between neighboring grains in polycrystalline materials. One critical step toward accurately capturing GNDs in deformation models involves studying the microstructural features that promote GND accumulation and the resulting ...
Landon T Hansen +5 more
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Abstract The concept of statistically stored and geometrically necessary dislocations is discussed in terms of observed deformation microstructures subdivided by incidental dislocation and geometrically necessary boundaries. This discussion is illustrated by examples of microstructures formed under conditions of homogeneous and nonhomogeneous ...
D.A Hughes, N Hansen, D.J Bammann
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Geometrically Necessary Dislocations in Deformed Martensitic Steel
Advanced Materials Research, 2014Effect of a size of closed structural formation on accumulation of dislocation density and its components at plastic deformation is studied. Main attention is given to a role of a division of boundaries of a different type. Structural formation sizes are determined and different parameters of structure defining micro-and mezolevel at development of ...
Nina Koneva +3 more
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Geometrically necessary dislocation and size-dependent plasticity
Scripta Materialia, 2003Abstract There has recently been a strong interest in modeling size-dependent plasticity in metals based on the concept of geometrically necessary dislocations. This article presents a brief summary of our viewpoints on geometrically necessary dislocations and their role in the development of continuum plasticity theories with an intrinsic material ...
Gao, H., Huang, Y.
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Experimental lower bounds on geometrically necessary dislocation density
International Journal of Plasticity, 2010zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kysar, J. W. +4 more
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Gradients of geometrically necessary dislocations from white beam microdiffraction
Materials Science and Engineering: A, 2005Abstract Variations in the local crystallographic orientation due to the presence of geometrically necessary dislocations and dislocation boundaries smear the distribution of intensity near Laue reflections. Here, some simple model distributions of geometrically necessary dislocations, GNDs, are used to estimate the dislocation tensor field from the ...
R.I. Barabash, G.E. Ice, J.W.L. Pang
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Where are the geometrically necessary dislocations accommodating small imprints?
Journal of Materials Research, 2009Electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM) analyses of small indentations in copper single crystals exhibit only slight changes of the crystal orientation in the surroundings of the imprints. Far-reaching dislocations might be the reason for these small misorientation changes.
M. Rester, C. Motz, R. Pippan
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Crystal plasticity model with enhanced hardening by geometrically necessary dislocation accumulation
Journal of the Mechanics and Physics of Solids, 2002zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Evers, L.P. +3 more
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