Dislocation Dynamics and Plasticity

1. Dislocations and Their Fundamental Properties.- 1.1 Geometry of a Dislocation.- 1.2 Stress Field and Energy of Dislocations.- 1.3 Force on a Dislocation.- 1.4 String Model of a Dislocation.- 1.5 Obstacles to Dislocation Motion.- 2. Motion of Dislocations in Soft Metals.- 2.1 General Characteristics.- 2.2 Intrinsic and Extrinsic Barriers for the Motion of Dislocations.- 2.3 Dislocation Velocity.- 2.3.1 General.- 2.3.2 Characteristics of Dislocation Motion in fcc and hcp Metals.- 2.3.3 The Steady-State Velocity and Number of Moving Dislocations.- 2.4 Frictional Forces due to Conduction Electrons and Phonons.- 2.5 Theoretical Studies of the Frictional Forces.- 2.5.1 Frictional Force due to Conduction Electrons.- 2.5.2 Frictional Force due to Phonons.- 3. Dislocation Motion in the Field of a Random Distribution of Point Obstacles: Solution Hardening.- 3.1 Solution Hardening.- 3.1.1 Experimental.- 3.1.2 Theoretical.- 3.2 Comparison of Theories of Solution Hardening with Computer Simulation.- 3.3 Effect of a Random Distribution of Point Obstacles on ?c.- 3.4 Appendix: Elastic Interaction Between a Dislocation and a Solute Atom.- 4. Dislocation Dynamics and Strength of Crystalline Materials.- 4.1 The Loss of Strength of Metals and Alloys in the Superconducting State.- 4.1.1 Temperature Dependence.- 4.1.2 Impurity Dependence.- 4.1.3 Strain-Rate Dependence.- 4.1.4 Anomalous Strain-Rate Dependence.- 4.1.5 Strain Dependence.- 4.2 Loss of Strength in the Normal State of Solid Solutions at Low Temperatures.- 4.3 Theory of Inertial Effects.- 4.3.1 Inertial Theory.- 4.3.2 Excitation of Quasiparticles by Moving Dislocations and Anomalous Strain-Rate Sensitivity of Bs.- 4.4 Quantitative Treatment of the Strength of Metals and Alloys of fcc Structure.- 4.4.1 Unzipping Effect.- 4.4.2 Effects of Inertia on the Activation Process.- 4.4.3 Quantitative Analysis of ??ns.- 4.4.4 Effect of Inertia on the Activation Volume.- 5. Dislocation Motion Controlled by the Peieris Mechanism.- 5.1 Introduction.- 5.2 Dislocation Glide by the Peieris Mechanism.- 5.2.1 Smooth Kink Model.- 5.2.2 Dislocation Velocity in the Smooth Kink Model.- 5.2.3 Abrupt Kink Model.- 6. Dislocations in bcc Metals and Their Motion.- 6.1 Dislocations in bcc Metals and Their Peierls Potential.- 6.2 Computer Experiments.- 6.2.1 Crystal Geometry and Peierls Stress.- 6.2.2 Core Structure of a Screw Dislocation.- 6.2.3 Behavior Under Stress.- 6.3 Plasticity of bcc Metals.- 6.3.1 Yielding of bcc Metals.- 6.3.2 Plasticity of bcc Metal Single Crystals.- 7. Dislocation Motion in Semiconducting Crystals.- 7.1 Introduction.- 7.2 Structure of Dislocations in Semiconducting Crystals.- 7.2.1 Atomic Structure.- 7.2.2 Electronic Structure of the Dislocation Core.- 7.3 Mobility of Dislocations in Semiconducting Crystals.- 7.3.1 Experimental Facts.- 7.3.2 The Mechanism Controlling the Mobility.- 7.4 Effect of Electronic Excitation on the Dislocation Mobility.- 7.5 Photoplastic Effect in II-VI Compounds.- 7.5.1 Plasticity and Dislocation Motion in II-VI Compounds.- 7.5.2 Photoplastic Effect.- 8. High-Temperature Deformation of Metals and Alloys.- 8.1 Deformation Mechanism Map.- 8.1.1 Dislocation Glide.- 8.1.2 Diffusional Creep.- 8.1.3 Power Law Creep.- 8.1.4 Harper-Dorn Creep.- 8.1.5 Effect of Internal Structure.- 8.1.6 Others.- 8.2 Deformation due to Dislocation Motion.- 8.2.1 Thermal and Athermal Processes.- 8.2.2 Viscous Motion and High-Speed Motion of Dislocations.- 8.3 Identification of Deformation Mechanism at High Temperatures.- 8.3.1 Temperature Change Technique.- 8.3.2 Strain Rate Change Technique.- 8.3.3 Stress Dip Technique.- 8.3.4 Stress Change Technique.- 8.3.5 Fundamental Problems in Internal Stress Measurement.- 8.3.6 Techniques to Determine Whether the Effective Stress Is Appreciable or Negligible.- 9. High-Temperature Deformation Mechanism in Metals and Alloys.- 9.1 High-Temperature Deformation Mechanism in Pure Metals.- 9.1.1 Jog-Drag Theory.- 9.1.2 Theory of Recovery Control.- 9.1.3 Effect of Inhomogeneity in the Dislocation Structure.- 9.1.4 Experimental Values of h and r.- 9.2 High-Temperature Deformation Mechanism in Alloys.- 9.2.1 High-Temperature Deformation Behavior of Solution-Hardened Alloys.- 9.2.2 Drift Flow of Solute Atoms Relative to a Moving Dislocation.- 9.2.3 Resistance to Dislocation Motion due to Solute Atmosphere.- 9.2.4 Interpretation of High-Temperature Deformation Behavior of Alloys.- 10. High-Temperature Deformation Mechanism in Composite Materials.- 10.1 Types of Composite Materials.- 10.2 High-Temperature Deformation Mechanism in Dispersion-Strengthened Materials.- 10.2.1 Climb Model.- 10.2.2 Attractive Interaction.- 10.3 High-Temperature Deformation Mechanism in Fiber- and Lamella-Reinforced Materials.- References.