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Introduction and point groups Stereographic projections Low symmetry systems Space groups

Crystallography. H. K. D. H. Bhadeshia. Introduction and point groups Stereographic projections Low symmetry systems Space groups Deformation and texture Interfaces, orientation relationships Martensitic transformations. 180° rotation about horizontal axis. Invert rotated image.

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Introduction and point groups Stereographic projections Low symmetry systems Space groups

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  1. Crystallography H. K. D. H. Bhadeshia Introduction and point groups Stereographic projections Low symmetry systems Space groups Deformation and texture Interfaces, orientation relationships Martensitic transformations

  2. 180° rotation about horizontal axis

  3. Invert rotated image

  4. Invert rotated image mirror + =

  5. 2 equivalent to mirror

  6. deformation of single crystals Schmid and Boas crystal axes sample axes

  7. properties as a function of sample axes

  8. Orientation of grains in polycrystalline sample relative to sample axes

  9. Diffraction phenomena

  10. 2 equivalent to mirror

  11. sphere sphere great circles: diameter equal to that of sphere

  12. sphere small circles: diameter less than that of sphere small circle sphere small circle

  13. 001 To represent angles and planes 010 100

  14. (north) 001 Representing a plane normal 010 100 (south)

  15. (north) 001 Representing a plane normal 010 100 (south)

  16. Cubic stereogram

  17. (north) 001 Representing a plane normal 010 100 (south)

  18. Wulff net

  19. Wulff net

  20. Using small circles • To locate a pole at angles 1 from p1 and 2 from p2 draw the two small circles with angular centres on the two poles. • Solutions at intersections.

  21. Angle between two planes

  22. Cubic Symmetry

  23. Cubic symmetry

  24. Full cubic stereogram

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