Dislocation Dynamics and Plasticity

This clear, well-illustrated presentation of the physics of plasticity will be welcomed by graduate students and research scientists requiring a review of the state of the art in this field.

Texte du rabat

This textbook gives a clear, well-illustrated account of the current understanding of the physics of plasticity. The plastic deformation of various types of crystals over a wide range of temperature is treated in terms of dynamical properties of dislocations. Special effects of plasticity, e.g. softening of metals at the superconducting transition and photoplastic effects in semiconducting crystals, are emphasized, as well as creep deformation in metals and composite materials.

Contenu

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.- 2.4 Frictional Forces due to Conduction Electrons and Phonons.- 2.5 Theoretical Studies of the Frictional Forces.- 3. Dislocation Motion in the Field of a Random Distribution of Point Obstacles: Solution Hardening.- 3.1 Solution Hardening.- 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.- 4.2 Loss of Strength in the Normal State of Solid Solutions at Low Temperatures.- 4.3 Theory of Inertial Effects.- 4.4 Quantitative Treatment of the Strength of Metals and Alloys of fcc Structure.- 5. Dislocation Motion Controlled by the Peieris Mechanism.- 5.1 Introduction.- 5.2 Dislocation Glide by the Peieris Mechanism.- 6. Dislocations in bcc Metals and Their Motion.- 6.1 Dislocations in bcc Metals and Their Peierls Potential.- 6.2 Computer Experiments.- 6.3 Plasticity of bcc Metals.- 7. Dislocation Motion in Semiconducting Crystals.- 7.1 Introduction.- 7.2 Structure of Dislocations in Semiconducting Crystals.- 7.3 Mobility of Dislocations in Semiconducting Crystals.- 7.4 Effect of Electronic Excitation on the Dislocation Mobility.- 7.5 Photoplastic Effect in II-VI Compounds.- 8.High-Temperature Deformation of Metals and Alloys.- 8.1 Deformation Mechanism Map.- 8.2 Deformation due to Dislocation Motion.- 8.3 Identification of Deformation Mechanism at High Temperatures.- 9. High-Temperature Deformation Mechanism in Metals and Alloys.- 9.1 High-Temperature Deformation Mechanism in Pure Metals.- 9.2 High-Temperature Deformation Mechanism in 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.- 10.3 High-Temperature Deformation Mechanism in Fiber- and Lamella-Reinforced Materials.- References.