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Alloy Strengthening Mechanisms, Microstructure Control, and Performance Optimization. [PDF]
Materials (Basel)Zhou H, Feng K.
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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]
Nat CommunSun B +8 more
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Character and Distribution of Geometrically Necessary Dislocations in Polycrystalline Tantalum.
Microscopy and Microanalysis, 2023Geometrically necessary dislocations (GNDs) play a key role in accommodating strain incompatibility between neighboring grains in polycrystalline materials.
Landon T. Hansen +5 more
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Zeitschrift für angewandte Mathematik und Physik, 2020
The paper studies the geometric dislocation density tensor and Burgers vector using an elastic-plastic decomposition of Laplace stretch which arises from a QR decomposition of the deformation gradient and allows for direct experimental measurement. The geometric dislocation density tensor is obtained using the classical argument of failure of a Burgers
Sandipan Paul, A. Freed
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The paper studies the geometric dislocation density tensor and Burgers vector using an elastic-plastic decomposition of Laplace stretch which arises from a QR decomposition of the deformation gradient and allows for direct experimental measurement. The geometric dislocation density tensor is obtained using the classical argument of failure of a Burgers
Sandipan Paul, A. Freed
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Scripta Materialia, 2003
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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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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