| Abstrakt: |
Diffusion is fundamental to most metallurgical processes, e.g., homogenization, recrystallization, phase changes, age-hardening, &c. Most of these processes involve diffusion in the solid metal and, in point of fact, a large part of the published work is devoted to solid-state studies. This, however, is primarily attributable to the usefulness of solid-state diffusion phenomena as a tool in elucidating the mechanisms of atomic movement. The impetus for numerous diffusion studies in recent years was provided by various theoretical developments such as those of Darken on the Kirkendall effect, of Fisher on grain-boundary diffusion, and of Wert on interstitial mechanisms, &c. At the same time, improved or new experimental techniques have been evolved, notably those using radiotracers. |
