Dislocation Mechanism-Based Crystal Plasticity: Theory and Computation at the Micron and Submicron Scale

Crystal plasticity theory works at a small, usually microscopic scale. Dislocation Mechanism Based Crystal Plasticity: Theory and Computation at Micron and Submicron Scale provides a comprehensive introduction to the continuum and discreteness dislocation mechanism-based theories and computational methods of crystal plasticity at the micron and submicron scale. This volume grows from over 20 years of research and is a vital resource on continuous and discrete dislocation mechanisms-based crystal plasticity at the micron and submicron scale. The book consists of two parts. The first covers continuum dislocation mechanisms and includes the fundamental concept of conventional crystal plasticity theory at the macro-scale without size effect, strain gradient crystal plasticity theory based on Taylar law dislocation, mechanism at the mesoscale, considering size effects, phase-field theory of crystal plasticity and the application in modelling dislocations. In order to expand the crystal plasticity theory model, the application in nickel-base super-alloys is also illustrated. The second part describes discrete dislocation dynamic mechanism-based theory, and computation at the submicron scale, including single crystal plasticity theory, and discrete-continuous model of crystal plasticity with three-dimensional discrete dislocation dynamics coupling finite element method (DDD-FEM). Three kinds of plastic deformation mechanisms for submicron pillars are systematically presented. Further, dislocation nucleation and starvation at high strain rate, and temperature effect for dislocation annihilation mechanism, are described. Covers dislocation mechanism-based crystal plasticity theory and computation at the micron and submicron scalePresents crystal plasticity theory without size effectDeals with the 3D discrete-continuous (3D DCM) theoretic and computational model of crystal plasticity with 3D discrete dislocation dynamics (3D DDD) coupling finite element method (FEM)Includes discrete dislocation mechanism-based theory and computation at the submicron scale with single arm source, coating micropillar, lower cyclic loading pillars, and dislocation starvation at the submicron scale INDICE: 1. Introduction2. Conventional constitutive theory of plasticity3. Crystal plasticity theory4. Strain gradient crystal plasticity theory at micron-scale5. Dislocation based crystal plasticity theory and size effect6. Size-dependent deformation morphology of micropillars7. Micro-scale crystal plasticity model based on phase field theory8. Discrete-continuum model of crystal plasticity at submicron scale9. Single arm dislocation source controlled plasticity flow in FCC micropillars10. Confined plasticity in micropillars11. Mechanical annealing under low amplitude cyclic loading in micropillars12. Strain rate effect on the deformation of crystal at submicron scale13. Temperature effect for dislocation annihilation mechanism

• ISBN: 978-0-12-814591-3
• Editorial: Academic Press
• Encuadernacion: Rústica
• Páginas: 450
• Fecha Publicación: 05/04/2019
• Nº Volúmenes: 1
• Idioma: Inglés