Microstructure and yield strength of severely deformed silver


Gubicza, Jenő, Chinh, Nguyen Q., Lábár, János L., Hegedüs, Zoltán, Xu, Cheng and Langdon, Terence G. (2008) Microstructure and yield strength of severely deformed silver Scripta Materialia, 58, (9), pp. 775-778. (doi:10.1016/j.scriptamat.2007.12.028).

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Description/Abstract

High-purity silver was processed by equal-channel angular pressing (ECAP) to eight passes, giving an average grain size of 250 nm. The densities of dislocations and twins were measured and compared with reported values for other face-centered cubic metals processed by ECAP. The results show the saturation yield strength correlates to the dislocation density according to the Taylor equation, and that the value of the geometrical parameter ? in the Taylor equation is strongly influenced by the stacking fault energy.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1016/j.scriptamat.2007.12.028
ISSNs: 1359-6462 (print)
Keywords: equal-channel angular pressing, severe plastic deformation, stacking fault energy, silver, taylor equation
Subjects:
Organisations: Engineering Mats & Surface Engineerg Gp
ePrint ID: 64175
Date :
Date Event
May 2008Published
Date Deposited: 05 Dec 2008
Last Modified: 16 Apr 2017 17:21
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/64175

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