Orientation relationship, shape change and their traces in electron diffraction patterns and high-resolution transmission electron microscopy images

✍ Scribed by J.F. Nie

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 533 KB
• Volume: 56
• Category: Article
• ISSN: 1359-6454
• DOI: 10.1016/j.actamat.2008.03.001

✦ Synopsis

This paper outlines a straightforward method that can be used to predict the total number of orientation relationships between a pair of lattices that can be related by an invariant plane strain transformation and the shape change associated with each of the orientation relationships. This paper also provides a simple technique for calculating the shape strain and crystallography directly from electron diffraction patterns or Fourier-transformed digital patterns of high-resolution transmission electron microscopy images. It demonstrates that many of those diffusional phase transformations that are traditionally classified as non-displacive exhibit in fact a remarkable shape change and that the shape change can even be a simple shear.