✍ Scribed by Pavel Lejček; Aleš Jäger; Viera Gärtnerová
No coin nor oath required. For personal study only.
Data on anisotropy of grain boundary properties are frequently published. In some cases, when they show the reverse course of structural dependence than is expected, they can seem confusing. Examples of this "reversed anisotropy" found for grain boundary segregation, diffusion and migration are presented. We demonstrate that the reversed anisotropy of grain boundary properties is caused by the compensation effect. This can have serious consequences for grain boundary engineering. It is also suggested that grain boundaries can be classified specifically and generally solely on the basis of well-defined thermodynamic parameters.
📜 SIMILAR VOLUMES
Ahptract-The stress field and the strain energy of a screw grain boundary dislocation (GBD) are evaluated using the image stress solution of Chou (Physica S~U~ZJS solidi (a) 17,509, 1966). The results show that to a good approximation, a GBD of Burgers vector g can be treated as a crystal dislocatio