Grain boundaries - Theory and experimentation

Grain boundaries in crystalline materials are homophase interfaces, i.e. those between two crystals of the same structure and composition. Heterophase interfaces between two crystals of different structures, or belonging to different materials, a priori more complex, have given rise to approaches that are specific to them. However, they can be tackled with the same concepts and tools as those used for grain boundaries.

Thus, this article on homophase interfaces can serve as a basis for understanding any type of interface in different crystalline materials: metals, ceramics, semiconductors...

Interfaces are major elements in the microstructure of a material, and play a key role in most of its properties.