Abstract
Recent developments of high-resolution electron microscopy open possibilities of the direct observation of atomic images in metals and alloys. First, early studies of lattice fringe imaging of alloy structures, i.e. long period antiphase domain structure, periodic stacking variant, partially ordered structure, spinodal decomposition and Guinier-Preston zone, are surveyed. Current efforts on many-beam imaging of superstructure alloys and intermetallic compounds are reviewed. Putting emphasis on the applications of 1 MV electron microscopy, means of the interpretation of the structure images of perfectly and imperfectly ordered alloys are presented with some examples.
