Solidification of Containerless Undercooled Melts
Samenvatting
All metallic materials are prepared from the liquid state as their parent phase. Solidification is therefore one of the most important phase transformation in daily human life. Solidification is the transition from liquid to solid state of matter. The conditions under which material is transformed determines the physical and chemical properties of the as–solidified body. The processes involved, like nucleation and crystal growth, are governed by heat and mass transport.
Convection and undercooling provide additional processing parameters to tune the solidification process and to control solid material performance from the very beginning of the production chain.
To develop a predictive capability for efficient materials production the processes involved in solidification have to be understood in detail.
This book provides a comprehensive overview of the solidification of metallic melts processed and undercooled in a containerless manner
by drop tube, electromagnetic and electrostatic levitation, and experiments in reduced gravity.
The experiments are accompanied by model calculations on the influence of thermodynamic and hydrodynamic conditions that control
selection of nucleation mechanisms and modify crystal growth development throughout the solidification process.
Specificaties
Inhoudsopgave
<br /> Demixing of Cu–Co alloys showing a metastable miscibility gap
<br /> Short range order in undercooled melts
<br /> Influence of order in undercooled liquids on crystal nucleation
<br /> Crystal nucleation in undercooled melts
<br /> Phase field crystal modelling of homogeneous and heterogeneous crystal nucleation
<br /> Effects of transient heat and mass transfer and competitive nucleation on phase selection in rapid solidification
<br /> Nucleation of metastable phases in undercooled melts
<br /> Nucleation within the mushy–zone
<br /> Measurements of crystal growth velocities in undercooled melts of metals
<br /> Measurements of crystal growth in undercooled melts of semiconductors
<br /> Measurements of crystal growth dynamics in strong external magnetic fields
<br /> Influence of convection on dendrite growth dynamics by AC + DC levitation technique
<br /> Development of a numerical approach for modelling dendritic growth in EML of liquid metal drops
<br /> Mesoscopic modelling of dendrite growth in undercooled melts
<br /> Microscopic modelling of growth kinetics in undercooled melts
<br /> Multiscale solidification modelling of EML processed samples
<br /> Interaction of fine particles with dendrites in undercooled melts of semiconducting materials
<br /> Quantitative analysis of alloy structures solidified under limited diffusion conditions
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