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...
Gespeichert in:
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: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
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 |