Evolution of Phase Transitions A Continuum Theory

This 2006 work began with the author's exploration of the applicability of the finite deformation theory of elasticity when various standard assumptions such as convexity of various energies or ellipticity of the field equations of equilibrium are relinquished. The finite deformation theory of elasticity turns out to be a natural vehicle for the study of phase transitions in solids where thermal effects can be neglected. This text will be of interest to those interested in the development and application of continuum-mechanical models that describe the macroscopic response of materials capable of undergoing stress- or temperature-induced transitions between two solid phases. The focus is on the evolution of phase transitions which may be either dynamic or quasi-static, controlled by a kinetic relation which in the framework of classical thermomechanics represents information that is supplementary to the usual balance principles and constitutive laws of conventional theory.

Part I. Introduction: 1. What this monograph is about; 2. Some experiments; 3. Continuum mechanics; 4. Quasilinear systems; 5. Outline of monograph; Part II. Two-Well Potentials, Governing Equations and Energetics: 1. Introduction; 2. Two-phase nonlinearly elastic materials; 3. Field equations and jump conditions; 4. Energetics of motion, driving force and dissipation inequality; Part III. Equilibrium Phase Mixtures and Quasistatic Processes: 1. Introduction; 2. Equilibrium states; 3. Variational theory of equilibrium mixtures of phases; 4. Quasistatic processes; 5. Nucleation and kinetics; 6. Constant elongation rate processes; 7. Hysteresis; Part IV. Impact-Induced Transitions in Two-Phase Elastic Materials: 1. Introduction; 2. The impact problem for trilinear two-phase materials; 3. Scale-invariant solutions of the impact problem; 4. Nucleation and kinetics; 5. Comparison with experiment; 6. Other types of kinetic relations; 7. Related work; Part V. Multiple-Well Free Energy Potentials: 1. Introduction; 2. Helmholtz free energy potential; 3. Potential energy function and the effect of stress; 4. Example 1: the van der Waals fluid; 5. Example 2: two-phase martensitic material with cubic and tetragonal phases; Part VI. The Continuum Theory of Driving Force: 1. Introduction; 2. Balance laws, field equations and jump conditions; 3. The second law of thermodynamics and the driving force; Part VII. Thermoelastic Materials: 1. Introduction; 2. The thermoelastic constitutive law; 3. Stability of a thermoelastic material; 4. A one-dimensional special case: uniaxial strain; Part VIII. Kinetics and Nucleation: 1. Introduction; 2. Nonequilibrium processes, thermodynamic fluxes and forces, kinetic relation; 3. Phenomenological examples of kinetic relations; 4. Micromechanically-based examples of kinetic relations; 5. Nucleation; Part IX. Models for Two-Phase Thermoelastic Materials in One Dimension: 1. Preliminaries; 2. Materials of Mie-Gruneisen type; 3. Two-phase Mie-Gruneisen materials; Part X. Quasistatic Hysteresis in Two-Phase Thermoelastic Tensile Bars: 1. Preliminaries; 2. Thermomechanical equilibrium states for a two-phase material; 3. Quasistatic processes; 4. Trilinear thermoelastic material; 5. Stress cycles at constant temperature; 6. Temperature cycles at constant stress; 7. The shape-memory cycle; 8. The experiments of Shaw and Kyriakides; 9. Slow thermomechanical processes; Part XI. Dynamics of Phase Transitions in Uniaxially Strained Thermoelastic Solids: 1. Introduction; 2. Uniaxial strain in adiabatic thermoelasticity; 3. The impact problem; Part XII. Statics: Geometric Compatibility: 1. Preliminaries; 2. Examples; Part XIII. Dynamics: Impact-Induced Transition in a CuA1Nl Single Crystal: 1. Introduction; 2. Preliminaries; 3. Impact without phase transformation; 4. Impact with phase transformation; 5. Application to austenite-B1 martensite transformation in CuA1Nl; Part XIV. Quasistatics: Kinetics of Martensitic Twinning: 1. Introduction; 2. The material and loading device; 3. Observations; 4. The model; 5. The energy of the system; 6. The effect of the transition layers: further observations; 7. The effect of the transition layers: further modeling; 8. Kinetics.

This 2006 study will be of interest to those interested in the development and application of continuum-mechanical models that describe the macroscopic response of materials capable of undergoing stress- or temperature-induced transitions between two solid phases.