Experimental measurement of the thermal displacive properties of a large-angle twist grain boundary in gold

Quantitative X-ray diffraction techniques have been used to estimate the mean square thermal displacements of atoms in the interface region, and to measure the thermal coefficients parallel and normal to the interface plane for the large-angle Sigma = 13 ( theta = 22.6 deg ) (001) twist grain bounda...

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Veröffentlicht in:	Phys. Rev. Lett.; (United States) 1988-11, Vol.61 (19), p.2237-2240
Hauptverfasser:	FITZSIMMONS, M. R, BURKEL, E, SASS, S. L
Format:	Artikel
Sprache:	eng
Schlagworte:	ATOMS COHERENT SCATTERING Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology CRYSTAL STRUCTURE Defects and impurities in crystals microstructure DIFFRACTION ELEMENTS Exact sciences and technology EXPANSION GOLD Grain and twin boundaries GRAIN BOUNDARIES MATERIALS SCIENCE METALS Metals, semimetals and alloys MICROSTRUCTURE Physics SCATTERING Specific materials Structure of solids and liquids crystallography TEMPERATURE EFFECTS THERMAL EXPANSION TRANSITION ELEMENTS 360102 > Metals & Alloys-- Structure & Phase Studies X-RAY DIFFRACTION
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Zusammenfassung:	Quantitative X-ray diffraction techniques have been used to estimate the mean square thermal displacements of atoms in the interface region, and to measure the thermal coefficients parallel and normal to the interface plane for the large-angle Sigma = 13 ( theta = 22.6 deg ) (001) twist grain boundary in Au. The thermal properties of the grain boundary are shown to be much different from those of the bulk material, which indicates that the effective interatomic potential for an atom in the grain boundary is different from that in bulk Au. 14 ref.--AA
ISSN:	0031-9007 1079-7114
DOI:	10.1103/physrevlett.61.2237