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  4. An in-situ synchrotron study on microplastic flow of electrodeposited nanocrystalline nickel
 
research article

An in-situ synchrotron study on microplastic flow of electrodeposited nanocrystalline nickel

Ghosh, Pradipta
•
Van Petegem, Steven
•
Van Swygenhoven, Helena  
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2017
Materials Science And Engineering A-Structural Materials Properties Microstructure And Processing

Deformation in nanocrystalline (NC) materials is strongly influenced by the presence of a large fraction of grain boundaries. We present a comparative study on the role of intragranular root-mean-square strain and crystal-lographic texture on recovery processes. The detailed microstructure analysis with conventional X ray diffraction and in-situ synchrotron measurements during deformation are used to understand the various attributes of recovery mechanisms associated with annealing and deformation of electrodeposited NC nickel (grain size = 30 nm). Our results emphasize the dominance of local atomic rearrangements during thermal recovery processes, while deformation induced recovery processes are supported primarily by large-scale dislocation activity. The in-situ deformation of NC samples with two different textures illustrates further the influence of gran boundary character on recovery processes.

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Type
research article
DOI
10.1016/j.msea.2017.06.075
Web of Science ID

WOS:000406989000010

Author(s)
Ghosh, Pradipta
Van Petegem, Steven
Van Swygenhoven, Helena  
Chokshi, Atul H.
Date Issued

2017

Publisher

Elsevier Science Sa

Published in
Materials Science And Engineering A-Structural Materials Properties Microstructure And Processing
Volume

701

Start page

101

End page

110

Subjects

Nanocrystalline

•

Recovery

•

Deformation

•

Root-mean-square strain

•

Texture

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
UPSWYG  
Available on Infoscience
September 5, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/140164
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