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Length-scale in solidification analysis | |
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Thermodynamics of solidification | |
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Equilibrium | |
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The undercooling requirement | |
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Kinetic undercooling | |
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Curvature undercooling | |
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Thermal undercooling | |
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Constitutional undercooling | |
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Pressure undercooling | |
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Hierarchy of equilibrium | |
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Local interface equilibrium | |
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Interface non-equilibrium | |
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References | |
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Macro-scale phenomena - formation of macrostructure | |
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Relevant transport equations | |
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Introduction to the mathematics of diffusive transport | |
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The differential equation for macroscopic heat transport | |
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Solutions of the heat conduction equation | |
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References | |
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Macro-mass transport | |
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Solute diffusion controlled segregation | |
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Analysis of solute redistribution | |
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Equilibrium solidification | |
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No diffusion in solid, complete diffusion in liquid (the Gulliver-Scheil model) | |
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No diffusion in solid, limited diffusion in liquid | |
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Limited diffusion in solid, complete diffusion in liquid | |
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Limited diffusion in liquid and solid | |
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Partial mixing in liquid, no diffusion in solid | |
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Zone melting | |
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Fluid flow controlled segregation | |
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Shrinkage flow | |
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Natural convection | |
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Flow through the mushy zone | |
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Fluid flow/solute diffusion controlled segregation | |
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Fluid dynamics during mold filling | |
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Fluid dynamics during casting solidification--macro shrinkage formation | |
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References | |
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Macro-Energy Transport | |
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Governing equation for energy transport | |
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Boundary conditions | |
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Analytical solutions for steady-state solidification of castings | |
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Analytical solutions for non-steady-state solidification of castings | |
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Resistance in the mold | |
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Resistance at the mold/solid interface | |
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The heat transfer coefficient | |
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Resistance in the solid | |
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Resistance in the solid and in the mold | |
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References | |
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Macro-modeling of solidification; Numerical approximation methods | |
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Problem formulation | |
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Discretization of governing equations | |
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Taylor series and numerical differentiation | |
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Finite difference discretization of the heat conduction equation | |
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Control volume formulation | |
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Solution of the discretized equations | |
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Applications of macro-modeling of solidification | |
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Model deliverables | |
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Criteria functions | |
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Scaling relationships for criteria functions | |
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References | |
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Micro-scale phenomena and interface dynamics | |
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Problem formulation | |
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Nucleation | |
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Heterogeneous nucleation models | |
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Dynamic nucleation models | |
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Micro-solute redistribution in alloys and microsegregation | |
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Interface stability | |
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Thermal instability | |
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Solutal instability | |
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Thermal, solutal and surface energy driven morphological instability | |
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Influence of convection on interface stability | |
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References | |
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Cellular and dendritic growth | |
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Morphology of primary phases | |
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Interface undercooling and growth velocity models for dendrites | |
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Tip velocity models | |
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Solute diffusion controlled growth (isothermal growth) | |
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Thermal diffusion controlled growth | |
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Solutal, thermal, and capillary controlled growth | |
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Interface anisotropy and the dendrite tip selection parameter | |
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Effect of fluid flow on dendrite tip velocity | |
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Multicomponent alloys | |
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Dendritic arrays models | |
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Volume averaged dendrite models | |
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Complex geometry models | |
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Dendritic arm spacing and coarsening | |
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Primary spacing | |
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Secondary arm spacing | |
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The columnar-to-equiaxed transition | |
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References | |
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Eutectic solidification | |
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Types of eutectics | |
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Cooperative eutectics | |
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Model of eutectic growth assuming only diffusion parallel to the interface | |
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Model of eutectic growth assuming diffusion parallel and perpendicular to the interface; the Jackson-Hunt model | |
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Operating point of cooperative eutectics | |
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The extremum criterion | |
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Growth at the limit of morphological stability | |
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Divorced eutectics | |
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Modification of eutectics | |
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Interface stability of eutectics | |
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Competitive growth of eutectic and dendritic phases | |
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Equiaxed eutectic grain growth | |
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References | |
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Peritectic and monotectic solidification | |
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Peritectic solidification | |
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The Peritectic Reaction | |
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The Peritectic Transformation | |
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Monotectic Solidification | |
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References | |
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Solidification in the presence of a third phase | |
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Interaction of solid inclusions with the solid/liquid interface | |
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Particle interaction with a planar interface | |
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Thermodynamic models | |
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Thermal properties criterion models | |
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Kinetic models | |
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Particle interaction with a cellular/dendritic interface | |
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Microshrinkage | |
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The physics of microshrinkage formation | |
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Modeling of microshrinkage formation | |
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Prevention of microshrinkage | |
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References | |
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Atomic scale phenomena: nucleation and growth | |
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Homogeneous nucleation | |
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Heterogeneous nucleation | |
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Growth kinetics | |
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Types of interfaces | |
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Continuous growth | |
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Lateral growth | |
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References | |
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Stochastic modeling of solidification | |
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Monte-Carlo grain growth models | |
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Dendrite envelope growth models | |
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Eutectic S/L interface growth models | |
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Cellular automaton models | |
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Cellular automaton grain growth models | |
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Cellular automaton dendrite growth models | |
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References | |
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Macro-micro modeling of solidification of some commercial alloys | |
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Steel | |
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Nucleation of primary dendrites | |
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Growth of primary dendrites | |
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Micro/macro-segregation | |
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Inclusions | |
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Cast iron | |
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Nucleation and growth of austenite dendrites | |
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Crystallization of graphite from the liquid | |
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Eutectic solidification | |
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Microsegregation | |
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The gray-to-white structural transition | |
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Room temperature microstructure and mechanical properties | |
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Aluminum-silicon alloys | |
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Nucleation and growth of primary aluminum dendrites | |
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Eutectic solidification | |
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Superalloys | |
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References | |
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Appendix A | |
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Appendix B | |
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Subject Index | |
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About the Author | |