2. Interactions between matrix dislocations and grain boundaries

2.1 Study of dislocation reactions at grain boundaries

The study of interaction reactions between matrix dislocations and grain boundaries requires characterization of these defects in the joint (intrinsic and extrinsic dislocations) and in the matrix. Transmission electron microscopy (TEM), combined with computer-based contrast simulation techniques, is the ideal tool for carrying out this type of study. For a general description of the basics and different methods of electron microscopy and the characterization of dislocations in crystals, the reader is referred to