Data on anisotropy of grain boundary properties were frequently published. In some cases, when they show the reverse course of structural dependence than was expected, they could seem confusing. Examples of this “reversed anisotropy” found for grain boundary segregation, diffusion and migration were presented. It was demonstrated that the reversed anisotropy of grain boundary properties was caused by the compensation effect. This could have serious consequences for grain boundary engineering. It was also suggested that grain boundaries could be classified specifically and generally solely on the basis of well-defined thermodynamic parameters.

Reversed Anisotropy of Grain Boundary Properties and its Effect on Grain Boundary Engineering. P.Lejček, A.Jäger, V.Gärtnerová: Acta Materialia, 2010, 58[6], 1930-7