Migration of tilt boundaries and facet development in thin gold bicrystals

Technical Report · Thu Mar 31 23:00:00 EST 1977

DOI:https://doi.org/10.2172/7308086· OSTI ID:7308086

Allen, R. M.; Goodhew, P. J.

Thin films of gold were welded together to create bicrystals containing (001) twist grain boundaries. The bicrystals were heated in the transmission electron microscope, and the migration of first twist and subsequently tilt regions of the boundary was observed directly. The tilt boundaries showed a tendency to facet which grew less pronounced as the twist angle was increased. The preferred boundary planes appeared to be controlled either by inhomogeneities in the thickness of the original single-crystal films or by the lowest-energy section of the O-lattice, which in this case is the plane with the highest density of O-points. The interaction of a migrating boundary with bubbles of a range of sizes was also observed, and the pinning effects are reported. 9 figures, 1 table.

• Research Organization: Cornell Univ., Ithaca, NY (USA)
• Sponsoring Organization: US Energy Research and Development Administration (ERDA)
• OSTI ID: 7308086
• Report Number(s): COO--2679-11
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
CRYSTAL STRUCTURE
ELEMENTS
FABRICATION
FILMS
GOLD
GRAIN BOUNDARIES
HIGH TEMPERATURE
JOINING
METALS
MICROSTRUCTURE
TRANSITION ELEMENTS
WELDING