Analysis of diffraction from (001) twist boundaries in cubic metals
An analysis of the diffraction from (001) twist boundaries in cubic metals has been made using analytical methods. A relatively simple model for boundary structure involving rotational relaxations around O lattice elements in the boundary core was employed. The results yielded grain boundary diffracted intensity on a grain boundary diffraction lattice in reciprocal space. This lattice consisted of an array of line elements running parallel to the twist axis in a square pattern corresponding to the reciprocal lattice of the Coincidence Site Lattice lying parallel to the grain boundary plane. The analytical model predicted the presently available main features of experimentally observed diffracted intensities and also those obtained by computer simulation calculations and clearly revealed the physical origins of the diffraction effects. The generalization of the analytical model to include any type of boundary was indicated. 9 figures.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge (USA). Dept. of Materials Science and Engineering
- DOE Contract Number:
- AC02-78ER05002
- OSTI ID:
- 6436588
- Report Number(s):
- DOE/ER/05002-32; ON: DE83008757
- Country of Publication:
- United States
- Language:
- English
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