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Tailoring stacking fualt energy for high ductility and high strength in ultra-fine grained Cu and Its alloy

Zhao, Y.H., Zhu, Y.T., Liao, X.Z., Horita, Z. and Langdon, T.G. (2006) Tailoring stacking fualt energy for high ductility and high strength in ultra-fine grained Cu and Its alloy Applied Physics Letters, 89, (121906), 121906/1- 121906/3. (doi:10.1063/1.2356310).

Record type: Article


Bulk ultrafine grained (UFG) materials produced by severe plastic deformation often have low ductility. Here the authors report that simultaneous increases in ductility and strength can be achieved by tailoring the stacking fault energy (SFE) via alloying. Specifically, UFG bronze (Cu 10 wt. % Zn) with a SFE of 35 mJ/m2 was found to have much higher strength and ductility than UFG copper with a SFE of 78 mJ/m2. Accumulations of both twins and dislocations during tensile testing play a significant role in enhancing the ductility of the UFG bronze. This work demonstrates a strategy for designing UFG alloys with superior mechanical properties.

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Published date: 2006
Organisations: Engineering Mats & Surface Engineerg Gp


Local EPrints ID: 43704
ISSN: 0003-6951
PURE UUID: c9b4f41b-3009-48cc-855b-ffabc0930814
ORCID for T.G. Langdon: ORCID iD

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Date deposited: 26 Jan 2007
Last modified: 17 Jul 2017 15:18

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

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