Abstract
The atomic structure of 2 = 5(θ = 36.9 deg) [001] tilt boundaries in gold has been investigated by high-resolution electron microscopy (HREM). Image simulations and experimental conditions for observing grain boundary atomic structure in gold are presented. Two preferred orientations corresponding to symmetric {310} and asymmetric {430}//{100} inclinations have been observed frequently. A single symmetric {210} inclination has also been observed. The atomic structures of these three boundaries are presented. An average ratio of grain boundary to surface energy, γgb/γs, of 0.62 has been measured at 200 °C. Unique atomic structures are observed for {310}, {430}//{100}, and {210} inclinations, and multiplicities in atomic structures have not been detected. Interfacial volume expansion of these interfaces is presented and compared to computational models.
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This paper is based on a presentation made in the symposium “Interface Science and Engineering” presented during the 1988 World Materials Congress and the TMS Fall Meeting, Chicago, IL, September 26–29, 1988, under the auspices of the ASM-MSD Surfaces and Interfaces Committee and the TMS Electronic Device Materials Committee.
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Cosandey, F., Chan, SW. & Stadelmann, P. Atomic structure and energy of ∑ = 5 tilt boundaries in gold. Metall Trans A 21, 2299–2307 (1990). https://doi.org/10.1007/BF02646976
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DOI: https://doi.org/10.1007/BF02646976