Speaker
Description
Understanding grain growth and microstructural evolution is essential for controlling the properties of sintered materials. This lecture presents an overview of the mechanisms governing grain coarsening in both liquid-phase and solid-state sintering. It begins by examining the implications of grain growth for densification, with emphasis on capillarity and related driving forces.
Grain growth in liquid-phase sintering is reviewed through classical and contemporary models, including Ostwald ripening theory and the mixed-mechanism theory that describes coarsening behavior in liquid matrices. The lecture then addresses grain-growth phenomena in solid-state sintering, covering dense single-phase systems as well as the effects of second-phase particles, solute segregation, and residual porosity on boundary migration and grain growth. Within the framework of unified growth descriptions, the mixed-control mechanism of boundary migration and the mixed-mechanism principle of microstructural evolution are discussed, supported by experimental results from both ceramic and metallic systems. The lecture concludes by summarizing strategies for microstructural design in ceramics and powder-processed materials, and by outlining current challenges and emerging research directions.
| Professional Status of the Speaker | Senior Scientist |
|---|---|
| Invitation letter for visa | No |
| Interest in submitting a paper in a special issue of | No interest |
