Journal
JOURNAL OF MATERIALS SCIENCE
Volume 40, Issue 12, Pages 3219-3223Publisher
SPRINGER
DOI: 10.1007/s10853-005-2688-y
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Energies of symmetric [001] tilt and twist small angle grain boundaries in aluminum have been examined as a function of misorientations. Boundary energies were evaluated relative to solid/liquid interfacial energies by a dihedral angle method on surface grooves. Energies of (100)(s) tilt boundaries with the Burgers vector of a[100] were rather smaller than those of (110)(s) tilt boundaries with a/2[110]. Energies of twist boundaries at theta < 4 were slightly larger than those of (110)(s) tilt boundaries. The energies were well explained as a function of misorientations by the Read-Shockley type equation. The equation also correctly described the difference in elastic energy factors between the (110)(s) tilt and twist boundaries. However, the term b in the equation may take a constant value independent of the Burgers vectors. (c) 2005 Springer Science + Business Media, Inc.
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