Mechanisms of Diffusional Phase Transformations in Metals and Alloys

Applied Thermodynamics Free Energy-Composition Relationships for Binary Substitutional Solid Solutions Free Energy-Composition Diagram and Applications to Driving Force Calculations Thermodynamics of Interstitial Solid Solutions through Application to the Proeutectoid Ferrite Reaction in Fe-C Alloys Diffusional Nucleation in Solid--Solid Transformations Introduction through Qualitative General Statements Brief Comparative Survey of Nucleation in the Four Basic Types of Phase Transformation Outline of Approach for Development of Nucleation Theory Proof that the Equilibrium Concentration of Critical Nuclei Is Proportional to exp(_DG*=kT) Fictitious Equilibrium Nucleation Rate Derivation of Steady-State Nucleation Rate Estimation of b* Time-Dependent Nucleation Rate Feder et al.'s Treatment of t Time-Dependent Nucleation Rate for Homogeneous Nucleation with Isotropic g Ancillary Parameters Preliminary Consideration of the Approximation for fA DGvA W Nonclassical Nucleation Theory Modifications of Homogeneous Nucleation Kinetics by Anisotropic Interfacial Energy Nucleation Kinetics at the Faces of Disordered Grain Boundaries Comparative Nucleation Kinetics at Grain Faces, Edges, and Corners Relative to Homogeneous Nucleation: Trade-Offs between N and DG* When gab Is Isotropic Nucleation at Dislocations Comparisons of Theory and Experiment Diffusional Growth Basic Differences between Diffusional Nucleation and Diffusional Growth A General Theory of Precipitate Morphology Disordered Interphase Boundaries Partially and Fully Coherent Interphase Boundaries Relative Growth Kinetics of Disordered and Partially Coherent Interphase Boundaries Precipitation Introduction Metastable Equilibrium Phase Boundaries GP Zones Transition Phases Nucleation Sites Successive Reactions Involving Different Phases Precipitate Free Zones Coarsening (Ostwald Ripening) Overall Evolution of the Microstructure Massive Transformation Definition and History Phase Diagrams Thermodynamics Overall Reaction Kinetics and the Existence Range Nucleation of Massive Transformation Growth Kinetics Interfacial Structure, Habit Planes, Orientation Relationships, and Growth Mechanisms Note on the Driving Force for Trans-Interphase Boundary Diffusion during Massive Transformation in a Two-Phase Field Cellular Reaction Definition and Introduction Systematics of Cellular Reactions Nucleation of Cellular Reactions Growth Kinetics of Cells Pearlite Reaction Systematics Crystallography, Nucleation, and Growth Mechanisms Edgewise Growth Kinetics of Pearlite Martensitic Transformations Definition Salient Characteristics (Described Briefly) Thermodynamics of Martensite Transformation Overall Kinetics of Martensite Transformation Nucleation of Martensite Crystallography and Growth (or Propagation) of Martensite Bainite Reaction and Role of Shear in Diffusional Phase Transformations Introduction Three Definitions of Bainite Upper Bainite vs. Lower Bainite, and Inverse Bainite Sources of Carbide Precipitation References Index