Dislocations in Solids

Dislocations in Solids
Author: Anonim
Publsiher: Elsevier
Total Pages: 680
Release: 2007-05-16
Genre: Science
ISBN: 0080524680

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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

Dislocations in Solids

Dislocations in Solids
Author: Anonim
Publsiher: Elsevier
Total Pages: 650
Release: 2011-09-22
Genre: Science
ISBN: 0080564984

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New models for dislocation structure and motion are presented for nanocrystals, nucleation at grain boundaries, shocked crystals, interphase interfaces, quasicrystals, complex structures with non-planar dislocation cores, and colloidal crystals. A review of experimentally established main features of the magnetoplastic effect with their physical interpretation explains many diverse results of this type. The model has many potential applications for forming processes influenced by magnetic fields. • Dislocation model for the magnetoplastic effect • New mechanism for dislocation nucleation and motion in nanocrystals • New models for the dislocation structure of interfaces between crystals with differing crystallographic structure • A unified view of dislocations in quasicrystals, with a new model for dislocation motion • A general model of dislocation behavior in crystals with non-planar dislocation cores • Dislocation properties at high velocities • Dislocations in colloidal crystals

Dislocations in Solids without special title

Dislocations in Solids  without special title
Author: Frank Reginald Nunes Nabarro
Publsiher: Unknown
Total Pages: 135
Release: 1979
Genre: Dislocations in crystals
ISBN: CORNELL:31924099100319

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Dislocations in Solids

Dislocations in Solids
Author: Anonim
Publsiher: Elsevier
Total Pages: 602
Release: 2004-08-05
Genre: Science
ISBN: 0080472540

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This is the first volume to appear under the joint editorship of J.P. Hirth and F.R.N. Nabarro. While Volume 11 concentrated on the single topic of dislocations and work hardening, the present volume spreads over the whole range of the study of dislocations from the application by Kléman and his colleagues of homotopy theory to classifying the line and point defects of mesomorphic phases to Chaudhri's account of the experimental observations of dislocations formed around indentations. Chapter 64, by Cai, Bulatove, Chang, Li and Yip, discusses the influence of the structure of the core of a dislocation on its mobility. The power of modern computation allows this topic to be treated from the first principles of electron theory, and with empirical potentials for more complicated problems. Advances in electron microscopy allow these theoretical predictions to be tested. In Chapter 65, Xu analyzes the emission of dislocations from the tip of a crack and its influence on the brittle to ductile transition. Again, the treatment is predominantly theoretical, but it is consistently related to the very practical example of alpha iron. In a dazzling interplay of experiment and abstract mathematics, Kléman, Lavrentovich and Nastishin analyze the line and point structural defects of the many mesomorphic phases which have become known in recent years. Chapter 67, by Coupeau, Girard and Rabier, is essentially experimental. It shows how the various modern techniques of scanning probe microscopy can be used to study dislocations and their interaction with the free surface. Chapter 68, by Mitchell and Heuer, considers the complex dislocations that can form in ceramic crystals on the basis of observations by transmission electron microscopy and presents mechanistic models for the motion of the dislocations in various temperature regimes. While the underlying aim of the study of dislocations in energetic crystals by Armstrong and Elban in Chapter 69 is to understand the role of dislocations in the process of detonation, it has the wider interest of studying dislocations in molecular crystals which are ``elastically soft, plastically hard, and brittle''. Chaudhri in Chapter 70 discusses the role of dislocations in indentation processes, largely on the basis of the elastic analysis by E.H. Yoffe. The special case of nanoindentations is treated only briefly.

An Introduction to Composite Materials

An Introduction to Composite Materials
Author: D. Hull,T. W. Clyne
Publsiher: Cambridge University Press
Total Pages: 135
Release: 1996-08-13
Genre: Technology & Engineering
ISBN: 9781107393189

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This edition has been greatly enlarged and updated to provide both scientists and engineers with a clear and comprehensive understanding of composite materials. In describing both theoretical and practical aspects of their production, properties and usage, the book crosses the borders of many disciplines. Topics covered include: fibres, matrices, laminates and interfaces; elastic deformation, stress and strain, strength, fatigue crack propagation and creep resistance; toughness and thermal properties; fatigue and deterioration under environmental conditions; fabrication and applications. Coverage has been increased to include polymeric, metallic and ceramic matrices and reinforcement in the form of long fibres, short fibres and particles. Designed primarily as a teaching text for final-year undergraduates in materials science and engineering, this book will also interest undergraduates and postgraduates in chemistry, physics, and mechanical engineering. In addition, it will be an excellent source book for academic and technological researchers on materials.

Dislocations in Solids

Dislocations in Solids
Author: Frank R.N. Nabarro,John P. Hirth
Publsiher: Elsevier
Total Pages: 602
Release: 2004-12-15
Genre: Science
ISBN: 044451483X

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This is the first volume to appear under the joint editorship of J.P. Hirth and F.R.N. Nabarro. While Volume 11 concentrated on the single topic of dislocations and work hardening, the present volume spreads over the whole range of the study of dislocations from the application by Kléman and his colleagues of homotopy theory to classifying the line and point defects of mesomorphic phases to Chaudhri's account of the experimental observations of dislocations formed around indentations. Chapter 64, by Cai, Bulatove, Chang, Li and Yip, discusses the influence of the structure of the core of a dislocation on its mobility. The power of modern computation allows this topic to be treated from the first principles of electron theory, and with empirical potentials for more complicated problems. Advances in electron microscopy allow these theoretical predictions to be tested. In Chapter 65, Xu analyzes the emission of dislocations from the tip of a crack and its influence on the brittle to ductile transition. Again, the treatment is predominantly theoretical, but it is consistently related to the very practical example of alpha iron. In a dazzling interplay of experiment and abstract mathematics, Kléman, Lavrentovich and Nastishin analyze the line and point structural defects of the many mesomorphic phases which have become known in recent years. Chapter 67, by Coupeau, Girard and Rabier, is essentially experimental. It shows how the various modern techniques of scanning probe microscopy can be used to study dislocations and their interaction with the free surface. Chapter 68, by Mitchell and Heuer, considers the complex dislocations that can form in ceramic crystals on the basis of observations by transmission electron microscopy and presents mechanistic models for the motion of the dislocations in various temperature regimes. While the underlying aim of the study of dislocations in energetic crystals by Armstrong and Elban in Chapter 69 is to understand the role of dislocations in the process of detonation, it has the wider interest of studying dislocations in molecular crystals which are ``elastically soft, plastically hard, and brittle''. Chaudhri in Chapter 70 discusses the role of dislocations in indentation processes, largely on the basis of the elastic analysis by E.H. Yoffe. The special case of nanoindentations is treated only briefly.

Dislocations in Solids

Dislocations in Solids
Author: Frank Reginald Nunes Nabarro
Publsiher: Unknown
Total Pages: 135
Release: 1979
Genre: Electronic Book
ISBN: 0444852697

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Dislocations in Solids

Dislocations in Solids
Author: Hideji Suzuki
Publsiher: VSP
Total Pages: 696
Release: 1985-12
Genre: Science
ISBN: 9067640433

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This volume comprises the Proceedings of the Yamada Conference IX on Dislocations in Solids, held in August 1984 in Tokyo. The purpose of the conference was two-fold: firstly to evaluate the increasing data on basic properties of dislocations and their interaction with other types of defects in solids and, secondly, to increase understanding of the material properties brought about by dislocation-related phenomena. Metals and alloys, semi-conductors and ions crystals were discussed. One of the important points of contention was the electronic state at the core of dislocation. Another was the dislocation model of amorphous structure.

Soft Matter Physics

Soft Matter Physics
Author: Maurice Kleman,Oleg D. Laverntovich
Publsiher: Springer Science & Business Media
Total Pages: 637
Release: 2007-05-28
Genre: Science
ISBN: 9780387217598

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The study of "soft matter" materials with complex properties has raised a number of interesting problems in basic physics, biology, and materials science, all of which promise new and important technological applications. After a review of chemical bonds and phase transitions, the authors treat topics such as surface phenomena, stability of colloidal systems, structural properties of polymers, and topological defects. The monograph's emphasis on underlying physical principles offers a coherent treatment of the great variety of research in the field.

Dislocations in Solids

Dislocations in Solids
Author: Anonim
Publsiher: Elsevier
Total Pages: 328
Release: 2009-10-13
Genre: Science
ISBN: 0080932959

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Bacon and Osetsky present an atomistic model of dislocation-particle interactions in metal systems, including irradiated materials. This work is important in simulating actual behavior, removing earlier reliance on assumed mechanisms for dislocation motion. New mechanisms for dislocation generation under shock loading are presented by Meyers et al. These models provide a basis for understanding the constitutive behavior of shocked material. Saada and Dirras provide a new perspective on the Hall-Petch relation, with particular emphasis on nanocrystals. Of particular significance, deviations from the traditional stress proportional to the square-root of grain size relation are explained. Robertson et al consider a number of effects of hydrogen on plastic flow and provide a model that provides an explanation of the broad range of properties. . Flow stress of metal systems with particle hardening, including radiation effects New model for dislocation kinetics under shock loading Explanation of effects of nanoscale grain size on strength Mechanism of hydrogen embrittlement in metal alloys~

Dislocations in Solids The elastic theory

Dislocations in Solids  The elastic theory
Author: Frank Reginald Nunes Nabarro
Publsiher: Elsevier Science & Technology
Total Pages: 480
Release: 1979
Genre: Dislocations in crystals
ISBN: UOM:39015004463116

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Dislocations

Dislocations
Author: J. Friedel
Publsiher: Elsevier
Total Pages: 512
Release: 2013-10-22
Genre: Science
ISBN: 9781483135922

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Dislocations deals with the main properties of dislocations, including motion, climb, and vacancies. Topics covered include the elastic theory of dislocations, imperfect dislocations, and crystal growth, along with dislocation networks, annealing, and grain boundaries. The interaction of dislocations with other defects is also discussed. This book is comprised of 17 chapters and begins with an overview of the general properties of dislocations, with emphasis on perfect and real crystals and the general case for translation dislocations. The reader is then introduced to the motion of dislocations, including glide; vacancies and interstitial atoms; dislocation climb; imperfect dislocations and surfaces of misfit; and crystal growth, including growth from a liquid phase. The next section is devoted to the more or less complex networks of dislocations that can be formed in crystals, and to the plastic properties corresponding to these arrays. The remaining chapters explore the interactions of dislocations with other crystalline defects, primarily impurity atoms. This monograph is intended for physicists, metallurgists, materials scientists, research and engineering students, and research engineers.

Imperfections in Crystalline Solids

Imperfections in Crystalline Solids
Author: Wei Cai,William D. Nix
Publsiher: Cambridge University Press
Total Pages: 528
Release: 2016-08-31
Genre: Science
ISBN: 9781107123137

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An accessible textbook providing students with a working knowledge of the properties of defects in crystals, in a step-by-step tutorial style.

Dislocations in Solids Dislocations in crystals

Dislocations in Solids  Dislocations in crystals
Author: Frank Reginald Nunes Nabarro
Publsiher: North Holland
Total Pages: 576
Release: 1979
Genre: Dislocations in crystals
ISBN: UOM:39015004462951

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Mechanics and Physics of Solids at Micro and Nano Sscales

Mechanics and Physics of Solids at Micro  and Nano Sscales
Author: Ioan R. Ionescu,Sylvain Queyreau,Catalin R. Picu,Oguz Umut Salman
Publsiher: John Wiley & Sons
Total Pages: 260
Release: 2020-01-09
Genre: Science
ISBN: 9781786305312

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Chronicling the 11th US–France Mechanics and physics of solids at macro- and nano-scales symposium, organized by ICACM (International Center for Applied Computational Mechanics) in Paris, June 2018, this book addresses the breadth of issues raised. It covers a comprehensive range of scientific and technological topics (from elementary plastic events in metals and materials in harsh environments to bio-engineered and bio-mimicking materials), offering a representative perspective on state-of-the-art research and materials. Expounding on the issues related to mesoscale modeling, the first part of the book addresses the representation of plastic deformation at both extremes of the scale – between nano- and macro- levels. The second half of the book examines the mechanics and physics of soft materials, polymers and materials made from fibers or molecular networks.