Ultrasonic Treatment of Light Alloy Melts

Preface Authors Historical Overview of Ultrasonic Applications to Metallurgy References Fundamentals of Ultrasonic Melt Processing Dynamic Means of Melt Processing Low-Frequency Vibrations and Ultrasound: Basic Equations Propagation of Acoustic Waves in the Melt Acoustic Cavitation in Liquid Metals Cavitation Strength of Liquids Cavity Dynamics Cavitation Region in Liquids Acoustic Flows Experimental Studies of Cavitation in Liquid Metals Sonoluminescence in Melts Accelerated Mixing and Dissolution of Components in the Melt References Ultrasonic Degassing Cavitation and Degassing Nuclei Mechanism of Ultrasonic Degassing Ultrasonic Degassing in a Stationary Volume Ultrasonic Degassing in the Flow References Ultrasonic Filtration Effect of Ultrasound on Surface Tension and Wetting Sonocapillary Effect Basics of Filtration Mechanism of Ultrasonic Melt Filtration Filtering through Multilayer Screen Filters: Usfirals Process References Ultrasonic Grain Refinement Mechanisms of Ultrasonic Grain Refinement Activation of Substrates Deagglomeration and Dispersion of Particles Refinement of Nucleating Intermetallics Dendrite Fragmentation Nondendritic Solidification Ultrasonic Melt Processing in the Mold Ultrasonic Melt Processing in the Melt Flow References Refinement of Primary Particles Formation of Primary Particles during Solidification Effect of Ultrasound on Solidification of Intermetallic Compounds Effect of Ultrasound on the Solidification of Hypereutectic Al-Si Alloys References Ultrasonic Processing during Direct-Chill Casting of Light Alloys Direct-Chill Casting of Aluminum Alloys Ultrasonic Processing in the Sump of a Billet Ultrasonic Melt Processing in the Launder Direct-Chill Casting of Magnesium Alloys Effect of Ultrasonic Degassing and Filtration on Structure and Properties of Wrought Products Ultrasonic Degassing Ultrasonic Filtration Effect of Nondendritic Structure on Structure and Properties of Wrought Products Aluminum Wrought Alloys Magnesium Wrought Alloys Effect of Nondendritic Grain Structure on Homogenization References Ultrasonic Melt Processing during Shape Casting of Light Alloys Technological Approaches to Shape Casting with Ultrasonic Processing Effects of Ultrasonic Processing on Solidification in Molds Effect of Ultrasonic Processing on Structure and Properties of Shape Castings References Ultrasonic Processing of Composite and Immiscible Alloys Ultrasound-Assisted Introduction of Nonmetallic Particles and Fibers to Liquid Metals Mechanical Properties of Composite Materials Produced Using Ultrasonic Processing Ultrasonic Processing of Immiscible Alloys and Metallic Emulsions References Rapid Ultrasonic Solidification of Aluminum Alloys Basic Sonication Schemes for Rapid Solidification Formation of Nondendritic Structure in Rapid Solidification Mechanical Properties of Wrought Products from Nondendritic Granules References Zone Refining of Aluminum with Ultrasonic Melt Processing Basics of Zone Refining Ultrasonic Zone Refining of Aluminum Mechanisms of Sonication Effects on Zone Refining Structure and Characteristics of Deformed Acoustically Refined Aluminum References Semisolid Deformation of Billets with Nondendritic Structure Introduction to Semisolid Deformation 291 Effect of Nondendritic Structure of Billets on Thixotropic Behavior of Aluminum Alloys Rheological Parameters of Semisolid Alloys Computer Simulation of Semisolid Forging Semisolid Deformation of Casting Alloys with Nondendritic Grain Structure Application of Ultrasonic Processing to Rheocasting References Ultrasonic Melt Processing: Practical Issues Ultrasonic Equipment Design of Waveguide and Sonotrode Selection of Materials for Sonotrodes Characterization of Ultrasonic Processing References