Diffusion-induced grain-boundary

Figure 8.1. Diffusion-induced grain boundary migration in AI2O3. A sintered AI2O3 polycrystal annealed at I600°C for 2h in Fe203 vapour-containing air. Arrows with O and M respectively, indicate positions of grain boundaries before and after annealing.

Explain how the migration direction is determined at the beginning of diffusion-induced grain boundary migration. 

Diffusion-induced grain boundary migration occurs within a certain temperature range for a given material. Why ... 

King, A. H., Diffusion induced grain boundary migration. Inter. Mater. Rev., 32, 173 9, 1987. 

Handworker, C. A., Diffusion-induced grain boundary migration in thin films, in Diffusion Phenomena in Thin Films and Microelectronic Materials, D. Gupta and P. S. Ho (eds), Noyes Publications, Park Ridge, NJ, 245-322, 1988. 

Li, C. and Hillert, M., A metallographic study of diffusion-induced grain boundary migration in the Fe-Zn system, Acta MetalL, 29, 1949-60, 1981. 

Lee, H. Y., Kim, J.-S. and Kang, S.-J. L., Diffusion induced grain boundary migration and enhanced grain growth in BaTi03, Interface Science, 8, 223-29, 2000. 

Wang, S.-M., Effect of grain boundary structure on diffusion induced grain boundary migration in BaTi03, MS Thesis, KAIST, Daejeon, 2003. 

Guan, Z. M., Liu, G. X., Williams, D. B. and Notis, M. R., Diffusion-induced grain boundary migration and associated concentration profiles in a Cu-Zn alloy, Acta Metall, 37, 519-27, 1989. 

Other interesting examples of the flux-driven morphology evolution (cellular precipitation, diffusion induced grain boundary migration) can be found in Chapter 12, written by Yuriy Lyashenko. Here, he uses some general... 

Formation of a zone with concentrations required for the intermediate phase resulting from the processes of such a type as cold homogenization or diffusion-induced grain boundary migration (DIGM). 

Model of Diffusion-Induced Grain Boundary Migration 413... 

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