TY - JOUR

T1 - Contribution of grain boundary related strain accommodation to deformation of ultrafine-grained palladium

AU - Ivanisenko, Yu

AU - Enikeev, N. A.

AU - Yang, K.

AU - Smoliakov, A.

AU - Soloviev, V. P.

AU - Fecht, H.

AU - Hahn, H.

PY - 2016/6/21

Y1 - 2016/6/21

N2 - Ultrafine-grained Pd specimens with a mean grain size of 130 nm 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.

AB - Ultrafine-grained Pd specimens with a mean grain size of 130 nm 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.

KW - Deformation mechanisms

KW - EBSD

KW - Grain boundaries

KW - Nanostructured materials

KW - Plasticity

UR - http://www.scopus.com/inward/record.url?scp=84969704608&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2016.05.036

DO - 10.1016/j.msea.2016.05.036

M3 - Article

AN - SCOPUS:84969704608

VL - 668

SP - 255

EP - 262

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

SN - 0921-5093

ER -