Diffusion in solids is fundamental in the art and science of materials and an important topic of solid-state physics, physical metallurgy and materials science. Point defects like vacancies or interstitials mediate diffusion. Dislocations and grain boundaries are other types of defects and can act as high-diffusivity paths. .
This talk reminds the audience to some fundamentals of solid-state diffusion and to major techniques for diffusion measurements. Then we focus on diffusion in the binary systems Cu-Zn, Fe-Al, Fe-Si and Ni-Ti, which are binary neighbours of ternary shape-memory alloys. Self-diffusion is the most basic diffusion phenomenon in any solid. The talk covers at first main features self-diffusion in the pure components. Binary intermetallics are compounds of two metals or of a metal and a semimetal. Their structures are different from those of the constituents. Diffusion in major binary intermetallics of the above mentioned systems is considered as well
H. Mehrer (Vol. Ed.), Diffusion in Solid Metals and Alloys, Landolt-Börnstein. New Series, Group III, Vol. 33, Springer Verlag, 1990,
H. Mehrer, Diffusion in Solids, Springer-Verlag, July 2007
H. Mehrer, Self-diffusion, Solute-diffusion, and Interdiffusion in Binary Intermetallics, in: Diffusion Foundations 2, 1-72 (2014).