دانلود کتاب Physical basis of plasticity in solids

This book introduces the physical mechanism of the plastic deformation of solids, which relies essentially on the occurrence and motion of dislocations. These are linear defects, specific of crystalline solids whose motion under external stresses explains the relative ease by which solids (metals in particular) can be deformed in order to give them desired shapes. The objective is to introduce the topic to undergraduate students, restricting to the main ideas and showing their relevance in interpreting phenomena well known to everyone (e.g. why are certain metals harder than others?), and finally training the students in the practice of calculating the simplest properties of dislocations. Read more... Content: 1. Introduction. 1.1. Plasticity. 1.2. Organization and contents of the chapters. 1.3. General references -- 2. The structure of crystalline solids. 2.1. Introduction. 2.2. Crystal geometry. 2.3. Bravais lattices. 2.4. Unit cells. 2.5. Examples of crystal structures. 2.6. Non-crystalline solids -- 3. Mechanics of deformable solids. 3.1. Introduction. 3.2. Fundamental tensors. 3.3. Coordinate changes. 3.4. Stiffness tensor and crystal symmetry. 3.5. Isotropic solids -- 4. Vacancies, an example of point defects in crystals. 4.1. Classification of defects in crystals. 4.2. Stability of point-defects in solids. 4.3. Formation of vacancies -- 5. The geometry of dislocations. 5.1. Introduction. 5.2. Straight edge dislocation. 5.3. Other types of dislocations. 5.4. Volterra process of formation. 5.5. Observation of dislocations -- 6. Strain field of dislocations. 6.1. Introduction. 6.2. Strain and stress fields. 6.3. Action of a stress on a dislocation. 6.4. Line tension of a dislocation. 6.5. Interaction between dislocations. 6.6. Interaction between a dislocation and a vacancy -- 7. Interactions with the lattice 7.1. Introduction. 7.2. Core structure of an edge dislocation. 7.3. Peierls-Nabarro stress. 7.4. Dissociation of the dislocation core -- 8. Microscopic mechanism of plasticity. 8.1. Introduction. 8.2. Plastic deformation and local shear. 8.3. Elementary slip and yield strength. 8.4. Dislocation sources. 8.5. Dislocation glide and climb. 8.6. Hardening. 8.7. Effect of temperature. 8.8. Deformation rate. 8.9. Origin of the diversity of plastic behaviours. Abstract: Introduces the physical mechanism of the plastic deformation of solids, which relies essentially on the occurrence and motion of dislocations. Read more...