Introduction to Dislocations

Introduction to Dislocations

5th Edition - February 18, 2011
  • Authors: D. Hull, D. J. Bacon
  • eBook ISBN: 9780080966731
  • Paperback ISBN: 9780080966724

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Description

In materials science, dislocations are irregularities within the crystal structure or atomic scale of engineering materials, such as metals, semi-conductors, polymers, and composites. Discussing this specific aspect of materials science and engineering, Introduction to Dislocations is a key resource for students. The book provides students and practitioners with the fundamental principles required to understand dislocations. Comprised of 10 chapters, the text includes advanced computer modeling and very high-resolution electron microscopy to help readers better understand the structure of atoms close to the core of dislocations. It shows that atomic arrangement has a significant effect on the formation of dislocations and thereby on the properties of solids. The first two chapters of the book present an overview of dislocations. The crystal structures and the various defects and dislocations are discussed, and methods of observation and diagnosis of dislocations are covered. Chapters 3 to 5 discuss the behavior of dislocations and explain how changes in the structure and arrangement of atoms can affect the behavior of dislocations. The three chapters also discuss the mechanical properties of dislocations. The remaining chapters offer a detailed discussion of the mechanisms of dislocations and the mechanical strength of crystalline solids. The book is written for undergraduate- and graduate-level students in both materials science and mechanical engineering. Non-experts and novices working on mechanical properties, mechanisms of deformation and fracture, and properties of materials, as well as industrial and academic researchers, will find this book invaluable.

Key Features

  • Long-established academic reference by an expert author team, highly regarded for their contributions to the field.
  • Uses minimal mathematics to present theory and applications in a detailed yet easy-to-read manner, making this an understandable introduction to a complex topic.
  • Unlike the main competition, this new edition includes recent developments in the subject and up-to-date references to further reading and research sources.

Readership

Advanced undergraduate and graduate students taking dislocations, mechanical properties, mechanisms of deformation and fracture, and properties of materials courses as part of broader mechanical engineering and materials science curricula; Industry and academic researchers in the subjects listed above

Table of Contents

  • Chapter 1. Defects in Crystals

    1.1. Crystalline Materials

    1.2. Simple Crystal Structures

    1.3. Defects in Crystalline Materials

    1.4. Dislocations

    Chapter 2. Observation of Dislocations

    2.1. Introduction

    2.2. Electron Microscopy

    2.3. Other Experimental Methods

    2.4. Computer Simulation

    Chapter 3. Movement of Dislocations

    3.1. Concept of Slip

    3.2. Dislocations and Slip

    3.3. The Slip Plane

    3.4. Cross Slip

    3.5. Velocity of Dislocations

    3.6. Climb

    3.7. Experimental Observation of Climb

    3.8. Conservative Climb

    3.9. Plastic Strain due to Dislocation Movement

    Chapter 4. Elastic Properties of Dislocations

    4.1. Introduction

    4.2. Elements of Elasticity Theory

    4.3. Stress Field of a Straight Dislocation

    4.4. Strain Energy of a Dislocation

    4.5. Forces on Dislocations

    4.6. Forces between Dislocations

    4.7. Climb Forces

    4.8. Image Forces

    Chapter 5. Dislocations in Face-centered Cubic Metals

    5.1. Perfect Dislocations

    5.2. Partial Dislocations – The Shockley Partial

    5.3. Slip

    5.4. Thompson’s Tetrahedron

    5.5. Frank Partial Dislocation

    5.6. Dislocation Locks and Stair-Rod Partials

    5.7. Stacking Fault Tetrahedra

    Chapter 6. Dislocations in Other Crystal Structures

    6.1. Introduction

    6.2. Dislocations in Hexagonal Close-packed Metals

    6.3. Dislocations in Body-centered Cubic Metals

    6.4. Dislocations in Ionic Crystals

    6.5. Dislocations in Superlattices

    6.6. Dislocations in Covalent Crystals

    6.7. Dislocations in Layer Structures

    6.8. Dislocations in Polymer Crystals

    Chapter 7. Jogs and the Intersection of Dislocations

    7.1. Introduction

    7.2. Intersection of Dislocations

    7.3. Movement of Dislocations Containing Elementary Jogs

    7.4. Superjogs

    7.5. Jogs and Prismatic Loops

    7.6. Intersections of Extended Dislocations and Extended Jogs

    7.7. Attractive and Repulsive Junctions

    7.8. Extended Stacking-fault Nodes

    Chapter 8. Origin and Multiplication of Dislocations

    8.1. Introduction

    8.2. Dislocations in Freshly Grown Crystals

    8.3. Homogeneous Nucleation of Dislocations

    8.4. Nucleation of Dislocations at Stress Concentrators

    8.5. Multiplication of Dislocations by Frank–Read Sources

    8.6. Multiplication by Multiple Cross Glide

    8.7. Multiplication by Climb

    8.8. Grain Boundary Sources

    Chapter 9. Dislocation Arrays and Crystal Boundaries

    9.1. Plastic Deformation, Recovery and Recrystallization

    9.2. Simple Dislocation Boundaries

    9.3. General Low-angle Boundaries

    9.4. Stress Field of Dislocation Arrays

    9.5. Strain Energy of Dislocation Arrays

    9.6. Dislocations and Steps in Interfaces

    9.7. Movement of Boundaries

    9.8. Dislocation Pile-ups

    Chapter 10. Strength of Crystalline Solids

    10.1. Introduction

    10.2. Temperature- and Strain-Rate-Dependence of the Flow Stress

    10.3. The Peierls Stress and Lattice Resistance

    10.4. Interaction Between Point Defects and Dislocations

    10.5. Solute Atmospheres and Yield Phenomena

    10.6. The Flow Stress for Random Arrays of Obstacles

    10.7. The Strength of Alloys

    10.8. Work Hardening

    10.9. Deformation of Polycrystals

    10.10. Dislocations and Fracture

    The SI System of Units

Product details

  • No. of pages: 272
  • Language: English
  • Copyright: © Butterworth-Heinemann 2011
  • Published: February 18, 2011
  • Imprint: Butterworth-Heinemann
  • eBook ISBN: 9780080966731
  • Paperback ISBN: 9780080966724

About the Authors

D. Hull

Affiliations and Expertise

Emeritus Professor, School of Engineering, University of Liverpool, UK

D. J. Bacon

Affiliations and Expertise

Emeritus Professor, School of Engineering, University of Liverpool, UK