AbstractThe sections in this article areIntroductionEquilibrium Properties of Solid–Solid InterfacesStructures of Grain BoundariesStructures of Interphase BoundariesSegregation to an InterfaceInterfacial DiffusionForces for Interface MigrationCapillary ForcesChemical ForcesMechanical ForcesElastic Strain EnergyPlastic ResponseFrictional ForcesSolute DragParticle PinningExamplesThe Massive TransformationChemically‐Induced Grain Boundary MigrationDiscontinuous PrecipitationInitiation of Discontinuous PrecipitationTheories of Steady Cooperative GrowthExperimental ObservationsInterface Migration in MultilayersConclusions
