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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, pp. 188-193. (doi:10.1016/j.msea.2005.08.074).

Record type: Article


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.

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Published date: 2005
Additional Information: The Langdon Symposium: Flow and forming of Crystalline Materials
Keywords: stacking fault energy, copper and copper alloys, high pressure torsion, microstructure, deformation twins
Organisations: Engineering Sciences


Local EPrints ID: 23845
ISSN: 0921-5093
PURE UUID: 25f0bd4f-86b8-4a1e-99af-553753c18682
ORCID for T.G. Langdon: ORCID iD

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Date deposited: 22 Mar 2006
Last modified: 17 Jul 2017 16:16

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Author: Y.H. Zhao
Author: X.Z. Liao
Author: Y.T. Zhu
Author: Z. Horita
Author: T.G. Langdon ORCID iD

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