Influence of stacking fault energy on nanostructure formation under high pressure torsion


Zhao, Y.H., Liao, X.Z., Zhu, Y.T., Horita, Z. and Langdon, T.G. (2005) Influence of stacking fault energy on nanostructure formation under high pressure torsion. Materials Science and Engineering: A, 410-411, 188-193. (doi:10.1016/j.msea.2005.08.074).

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Description/Abstract

Copper, bronze (Cu–10 wt.% Zn) and brass (Cu–30 wt.% Zn) were deformed by high pressure torsion (HPT) under a pressure of 6 GPa for five rotations. The stacking fault energies (SFEs) of copper, bronze and brass are 78, 35 and 14 mJ/m2, respectively, and their average grain sizes after the HPT processing were about 84, 54 and 17 nm, respectively. Deformation twins were found in all samples and their densities increased with decreasing SFE. This work demonstrates that under the same conditions of HPT a low SFE promotes the formation of nanostructures and deformation twins.

Item Type: Article
Additional Information: The Langdon Symposium: Flow and forming of Crystalline Materials
ISSNs: 0921-5093 (print)
Related URLs:
Keywords: stacking fault energy, copper and copper alloys, high pressure torsion, microstructure, deformation twins
Subjects: T Technology > TN Mining engineering. Metallurgy
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences
ePrint ID: 23845
Date Deposited: 22 Mar 2006
Last Modified: 27 Mar 2014 18:13
URI: http://eprints.soton.ac.uk/id/eprint/23845

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