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Reversed anisotropy of grain boundary properties and its effect on grain boundary engineering / Pavel Lejček in Acta materialia, Vol. 58 N° 6 (Avril 2010) 

Public ISBD [article]  in Acta materialia > Vol. 58 N° 6 (Avril 2010) . - pp. 1930–1937 Titre : Reversed anisotropy of grain boundary properties and its effect on grain boundary engineering Type de document : texte imprimé Auteurs : Pavel Lejček, Auteur ; Aleš Jäger, Auteur ; Viera Gärtnerová, Auteur Année de publication : 2011 Article en page(s) : pp. 1930–1937 Note générale : Métallurgie Langues : Anglais (eng) Mots-clés : Grain  boundary  structure  Grain  boundary  diffusion  Grain  boundary  migration  Grain  boundary  segregation  Thermodynamics Résumé : 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. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409008155 [article] Reversed anisotropy of grain boundary properties and its effect on grain boundary engineering [texte imprimé] / Pavel Lejček, Auteur ; Aleš Jäger, Auteur ; Viera Gärtnerová, Auteur . - 2011 . - pp. 1930–1937. Métallurgie Langues : Anglais (eng) in Acta materialia > Vol. 58 N° 6 (Avril 2010) . - pp. 1930–1937 Mots-clés : Grain  boundary  structure  Grain  boundary  diffusion  Grain  boundary  migration  Grain  boundary  segregation  Thermodynamics Résumé : 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. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409008155