strain and dislocation gradients from diffraction spatially resolved local structure and defects

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Strain And Dislocation Gradients From Diffraction

Author : Rozaliya Barabash
ISBN : 9781908979643
Genre : Science
File Size : 21. 63 MB
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This book highlights emerging diffraction studies of strain and dislocation gradients with mesoscale resolution, which is currently a focus of research at laboratories around the world. While ensemble-average diffraction techniques are mature, grain and subgrain level measurements needed to understand real materials are just emerging. In order to understand the diffraction signature of different defects, it is necessary to understand the distortions created by the defects and the corresponding changes in the reciprocal space of the non-ideal crystals. Starting with a review of defect classifications based on their displacement fields, this book then provides connections between different dislocation arrangements, including geometrically necessary and statistically stored dislocations, and other common defects and the corresponding changes in the reciprocal space and diffraction patterns. Subsequent chapters provide an overview of microdiffraction techniques developed during the last decade to extract information about strain and dislocation gradients. X-ray microdiffraction is a particularly exciting application compared with alternative probes of local crystalline structure, orientation and defect density, because it is inherently non-destructive and penetrating. Contents:Diffraction Analysis of Defects: State of the Art (Rozaliya I Barabash and Gene E Ice)X-ray Laue Diffraction Microscopy in 3D at the Advanced Photon Source (Wenjun Liu and Gene E Ice)High-Energy Transmission Laue (HETL) Micro-Beam Diffraction (Felix Hofmann and Alexander M Korsunsky)XMAS: A Versatile Tool for Analyzing Synchrotron X-ray Microdiffraction Data (Nobumichi Tamura)Laue Microdiffraction at the ESRF (Odile Robach, Christoph Kirchlechner, Jean-Sébastien Micha, Olivier Ulrich, Xavier Biquard, Olivier Geaymond, Olivier Castelnau, Michel Bornert, Johann Petit, Sophie Berveiller, Olivier Sicardy, Julie Villanova and François Rieutord)3D X-Ray Diffraction Microscopy (Henning Friis Poulsen, Søren Schmidt, Dorte Juul Jensen, Henning Osholm Sørensen, Erik Mejdal Lauridsen, Ulrik Lund Olsen, Wolfgang Ludwig, Andrew King, Jonathan Paul Wright and Gavin B M Vaughan)Grain Centre Mapping — 3DXRD Measurements of Average Grain Characteristic (Jette Oddershede, Søren Schmidt, Allan Lyckegaard, Erik Mejdal Lauridsen, Jonathan Paul Wright and Grethe Winther)Three-Dimensional X-ray Diffraction (3DXRD) Imaging Techniques (Wolfgang Ludwig, Andrew King and Péter Reischig)High-Resolution Reciprocal Space Mapping for Characterizing Deformation Structures (Wolfgang Pantleon, Christian Wejdemann, Bo Jakobsen, Henning Friis Poulsen and Ulrich Lienert)Reconstructing 2D and 3D X-ray Orientation Maps from White-Beam Laue (Jonathan Z Tischler)Energy-Variable X-ray Diffraction for Studying Polycrystalline Materials with High Depth Resolution (Emil Zolotoyabko)Microstructure Detail Extraction via EBSD: An Overview (David Fullwood, Brent Adams, Jay Basinger, Timothy Ruggles, Ali Khosravani, Caroline Sorensen and Joshua Kacher)High-Pressure Studies with Microdiffraction (Wenge Yang) Readership: Researchers in X-ray science, materials science, applied physics, and mechanical engineering. Keywords:Diffraction;Microdiffraction;Laue Diffraction;Strain;Dislocations;Geometrically Necessary Dislocations;Dislocation Density;Plastic Deformation;Lattice RotationsKey Features:The book addresses the following three questions: what is the current state-of-the-art in this field; what are the advantages, capabilities and limitations of competing methods; what are the practical tools needed for spatially-resolved diffraction methods

Dislocations In Solids

Author :
ISBN : 0080524680
Genre : Science
File Size : 68. 8 MB
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Dislocations are lines of irregularity in the structure of a solid analogous to the bumps in a badly laid carpet. Like these bumps they can be easily moved, and they provide the most important mechanism by which the solid can be deformed. They also have a strong influence on crystal growth and on the electronic properties of semiconductors. · Influence of dislocations on piezoelectric behavior · New mechanisms for hardening in twinned crystals · Bringing theories of martensite transformation into agreement · Atomic scale motion of dislocations in electron microscopy · Dislocation patterns deduced from X-ray diffraction · Role of dislocations in friction · Dislocation motion in quasicrystals

Dislocation Mechanism Based Crystal Plasticity

Author : Zhuo Zhuang
ISBN : 9780128145920
Genre : Technology & Engineering
File Size : 36. 37 MB
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Dislocation Based Crystal Plasticity: Theory and Computation at Micron and Submicron Scale provides a comprehensive introduction to the continuum and discreteness dislocation mechanism-based theories and computational methods of crystal plasticity at the micron and submicron scale. Sections cover the fundamental concept of conventional crystal plasticity theory at the macro-scale without size effect, strain gradient crystal plasticity theory based on Taylar law dislocation, mechanism at the mesoscale, phase-field theory of crystal plasticity, computation at the submicron scale, including single crystal plasticity theory, and the discrete-continuous model of crystal plasticity with three-dimensional discrete dislocation dynamics coupling finite element method (DDD-FEM). Three kinds of plastic deformation mechanisms for submicron pillars are systematically presented. Further sections discuss dislocation nucleation and starvation at high strain rate and temperature effect for dislocation annihilation mechanism. Covers dislocation mechanism-based crystal plasticity theory and computation at the micron and submicron scale Presents crystal plasticity theory without size effect Deals with the 3D discrete-continuous (3D DCM) theoretic and computational model of crystal plasticity with 3D discrete dislocation dynamics (3D DDD) coupling finite element method (FEM) Includes discrete dislocation mechanism-based theory and computation at the submicron scale with single arm source, coating micropillar, lower cyclic loading pillars, and dislocation starvation at the submicron scale

Ssrl Activity Report 4 1 81 3 31 82

Author : Stanford University. Stanford Synchrotron Radiation Laboratory
ISBN : STANFORD:36105046382383
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Crystal Indentation Hardness

Author : Ronald W. Armstrong
ISBN : 9783038429678
Genre : Science
File Size : 32. 37 MB
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This book is a printed edition of the Special Issue "Crystal Indentation Hardness" that was published in Crystals

International Congress

Author : International Union of Crystallography
ISBN : UOM:39076007010965
Genre : Crystallography
File Size : 81. 58 MB
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Communicated Abstracts

Author : International Congress of Crystallography
ISBN : CORNELL:31924058444898
Genre : Crystallography
File Size : 33. 95 MB
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Physics Briefs

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ISBN : UOM:39015027837122
Genre : Physics
File Size : 88. 86 MB
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Dissertation Abstracts International

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ISBN : UOM:39015057953344
Genre : Science
File Size : 57. 55 MB
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Scientific And Technical Aerospace Reports

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ISBN : OSU:32435060170602
Genre : Aeronautics
File Size : 63. 72 MB
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