Deformation mechanisms during large strain deformation of nanocrystalline nickel

Gurao, NP and Suwas, Satyam (2009) Deformation mechanisms during large strain deformation of nanocrystalline nickel. In: Applied Physics Letters, 94 (19). 191902-1-191902-3.

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Abstract

In this letter, a conclusive evidence of the operation of planar slip along with grain boundary mediated mechanisms has been reported during large strain deformation of nanocrystalline nickel. Dislocation annihilation mechanism such as mechanical recovery has been found to play an important role during the course of deformation. The evidences rely on x-ray based techniques, such as dislocation density determination and crystallographic texture measurement as well as microstructural observation by electron microscopy. The characteristic texture evolution in this case is an indication of normal slip mediated plasticity in nanocrystalline nickel.

Item Type:	Journal Article
Publication:	Applied Physics Letters
Publisher:	American Institute of Physics
Additional Information:	Copyright of this article belongs to American Institute of Physics.
Keywords:	crystal microstructure;deformation;dislocation density;grain boundaries;nanostructured materials;nickel;plasticity;slip;texture.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	15 Jul 2009 05:30
Last Modified:	19 Sep 2010 05:34
URI:	http://eprints.iisc.ac.in/id/eprint/20854

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