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Microstructural evolution and mechanical properties of a Cu–Zr alloy processed by high-pressure torsion

Wongsa-Ngam, Jittraporn, Kawasaki, Megumi, Zhao, Yonghao and Langdon, Terence G. (2011) Microstructural evolution and mechanical properties of a Cu–Zr alloy processed by high-pressure torsion Materials Science and Engineering: A, 528, (25-26), pp. 7715-7722. (doi:10.1016/j.msea.2011.06.056).

Record type: Article


Experiments were conducted on a Cu–0.1% Zr alloy in order to examine the evolution of hardness and microstructure after processing by high-pressure torsion. Disks were pressed through different numbers of revolutions up to a maximum of 10 turns using an applied pressure of 6.0 GPa. It is shown that there is a gradual evolution in both the hardness and the microstructure with increasing numbers of turns. After 5 and 10 turns there is a high degree of hardness homogeneity and the microstructure consists of well-defined equiaxed grains. The measured grain size after 5 turns was ?180 nm in the peripheral region of the disk. Tensile testing at 673 and 723 K after processing through 5 and 10 turns showed a maximum elongation to failure of ?280% at 723 K using a strain rate of 1.0 × 10?4 s?1

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e-pub ahead of print date: 24 June 2011
Published date: 25 September 2011
Organisations: Bioengineering Group


Local EPrints ID: 335082
ISSN: 0921-5093
PURE UUID: 6df1dd0a-7495-47c6-a38a-52f7bddf04db
ORCID for Terence G. Langdon: ORCID iD

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Date deposited: 14 Mar 2012 09:48
Last modified: 18 Jul 2017 06:11

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Author: Jittraporn Wongsa-Ngam
Author: Megumi Kawasaki
Author: Yonghao Zhao

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