Relative boundary energies and mobilities were deduced from triple-junction geometries in foil samples. The variation in energy obeyed the Read-Shockley equation, whereas the high-angle boundaries were much more mobile than the low-angle grain boundaries. In the case of low-angle grain boundaries, it was found that boundaries with <001> misorientation axes had a higher energy than <101>-type or <111>-type boundaries, but were much less mobile than the others. It was also noted that low-angle twist boundaries had higher energies and mobilities than tilt boundaries.

Measuring Relative Grain Boundary Energies and Mobilities in an Aluminium Foil from Triple Junction Geometry. C.C.Yang, A.D.Rollett, W.W.Mullins: Scripta Materialia, 2001, 44[12], 2735-40