Accession Number:

AD0734839

Title:

Grain Boundary Contrast in Field Ion Microscope Images.

Descriptive Note:

Technical rept.,

Corporate Author:

ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MASS

Report Date:

1971-08-01

Pagination or Media Count:

22.0

Abstract:

The contrast in field ion microscopy images due to 110 symmetric tilt boundaries in a bcc lattice was systematically investigated for misorientations up to 26 degrees by computer image simulation. In low-angel grain boundaries, there are three contrast effects dislocation spirals, cusps in plane edges, and zone-line displacement. The way in which those contrast effects develop with increasing tilt angle is discussed and illustrated with image simulations. An important result is that under favorable conditions, contrast due to the boundary dislocations could still be resolved in the simulation of the high-angle 26 degree boundary. Author

Subject Categories:

  • Computer Programming and Software
  • Crystallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE