Contribution of grain boundary related strain accommodation to deformation of ultrafine-grained palladium

Ultrafine-grained Pd specimens with a mean grain size of 130nm were compressed by 10% in a scanning electron microscope and the strain-induced change in orientations of grains was measured by in-situ electron-backscattering diffraction. A comparison of grain orientations before and after compression...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2016-06, Vol.668, p.255-262
Hauptverfasser: Ivanisenko, Yu, Enikeev, N.A., Yang, K., Smoliakov, A., Soloviev, V.P., Fecht, H., Hahn, H.
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Ultrafine-grained Pd specimens with a mean grain size of 130nm were compressed by 10% in a scanning electron microscope and the strain-induced change in orientations of grains was measured by in-situ electron-backscattering diffraction. A comparison of grain orientations before and after compression straining revealed substantial grain rotations. The analysis of the results performed using polycrystal plasticity simulation showed that the variation of orientations with strain cannot be explained only by crystallographic dislocation slip. A large portion of strain is proved to be accommodated via cooperative non-crystallographic grain rotation.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2016.05.036