An investigation of the dislocation structure of the Ni/Ag phase boundary

Technical Report · Fri Dec 01 04:00:00 EST 1989

DOI:https://doi.org/10.2172/7008891· OSTI ID:7008891

Bamford, T. A. ^[1]

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1. Wilkes Coll., Wilkes-Barre, PA (USA). Dept. of Engineering and Physical Science

The Ni/Ag interphase boundary structure in the parallel cube-on-cube orientation was studied for the boundary planes (001) and (011). Coarsely spaced dislocations were found in all annealed interfaces; the origin of these was apparently differential thermal expansion of the bicrystal film. A detailed search for intrinsic periodic structure consistent with the O-lattice construction was made using x-ray diffraction, electron diffraction and transmission electron microscopy. No evidence for this could be found; such a relaxation, if present, is very weak. It is unlikely that such a small relaxation could account for relative energy minimum associated with the parallel cube-on-cube orientation found by previous investigators. 10 refs., 6 figs.

• Research Organization: Massachusetts Inst. of Tech., Cambridge, MA (USA). Dept. of Materials Science and Engineering
• Sponsoring Organization: DOE/ER
• DOE Contract Number: FG02-87ER45310
• OSTI ID: 7008891
• Report Number(s): DOE/ER/45310-20; ON: DE90008428
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
BICRYSTALS
COHERENT SCATTERING
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALS
DIFFRACTION
DISLOCATIONS
ELEMENTS
INTERFACES
LINE DEFECTS
METALS
NICKEL
PHASE STUDIES
POLYCRYSTALS
SCATTERING
SILVER
TRANSITION ELEMENTS
X-RAY DIFFRACTION