First-Principles Calculations of Grain Boundary-Surface for Various Grain Boundaries with Different Energies in Aluminum

Abstract:

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The grain boundary surface is the excess energy of the grain boundary as the lattice on one side of the grain is translated relative to the lattice on the other side of the grain. The maximum in the slope of the grain boundary surface determines the ideal shear strength for the grain boundary sliding. We presented the ideal shear strength for the grain boundary sliding in aluminum Σ3(11 2)[110] tilt grain boundary from the first-principles calculations. The ideal shear strength for the grain boundary sliding was much smaller than the ideal shear strength of a perfect single crystal.

Info:

Periodical:

Materials Science Forum (Volumes 551-552)

Edited by:

K.F. Zhang

Pages:

331-336

DOI:

10.4028/www.scientific.net/MSF.551-552.331

Citation:

T. Uesugi et al., "First-Principles Calculations of Grain Boundary-Surface for Various Grain Boundaries with Different Energies in Aluminum", Materials Science Forum, Vols. 551-552, pp. 331-336, 2007

Online since:

July 2007

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Price:

$35.00

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