| Numéro |
J. Phys. Colloques
Volume 49, Numéro C5, Octobre 1988
Interface Science and Engineering '87An International Conference on the Structure and Properties of Internal Interfaces |
|
|---|---|---|
| Page(s) | C5-63 - C5-70 | |
| DOI | https://doi.org/10.1051/jphyscol:1988505 | |
Interface Science and Engineering '87
An International Conference on the Structure and Properties of Internal Interfaces
J. Phys. Colloques 49 (1988) C5-63-C5-70
DOI: 10.1051/jphyscol:1988505
IBM Corporation, Thomas J. Watson Research Center, PO Box 218, Yorktown Heights, NY 10598, U.S.A.
An International Conference on the Structure and Properties of Internal Interfaces
J. Phys. Colloques 49 (1988) C5-63-C5-70
DOI: 10.1051/jphyscol:1988505
ATOMIC LEVEL OBSERVATION OF GRAIN BOUNDARIES IN METALS
D.A. SMITHIBM Corporation, Thomas J. Watson Research Center, PO Box 218, Yorktown Heights, NY 10598, U.S.A.
Abstract
High resolution microscopy has given an explicit, atomistic insight into the nature of the core structure of grain boundaries in metals. Specific issues which have been addressed and to some extent resolved are the occurrence of multiple structures, the transition from low angle to high angle character, the structural unit concept, the relation between the primary and secondary dislocations in a boundary, the spatial extent of the boundary core and the width of the cores of grain boundary dislocations. Much but not all that has been observed by high resolution microscopy was predicted by atomistic computer modelling.