Transcript Document

Crystallography
Introduction and point groups
Stereographic projections
Low symmetry systems
Space groups
Deformation and texture
Interfaces, orientation relationships
Martensitic transformations
H. K. D. H. Bhadeshia
Gypsum 2/m
Epsomite 222
2
equivalent to mirror
Stereographic representation of point groups
4
centre of
symmetry
centre of
symmetry
tetragonal
(Volk, Wohlecke)
(Karsten Bause)
Stereograms for systems of low symmetry
5
2,3,8
2,3,8
2,3,5
2,3,5
normals
directions
Weiss zone rule