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: Structural Materials: Properties, Microstructure and Processing, 528, (25-26), 7715-7722. (doi:10.1016/j.msea.2011.06.056).
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Description/Abstract
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
| Item Type: | Article |
|---|---|
| ISSNs: | 0921-5093 |
| Subjects: | T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Faculty of Engineering and the Environment > Engineering Sciences > Bioengineering Research Group |
| Item ID: | 335082 |
| Date Deposited: | 14 Mar 2012 09:48 |
| Last Modified: | 19 Jul 2012 13:09 |
| Contributors: | Wongsa-Ngam, Jittraporn (Author) Kawasaki, Megumi (Author) Zhao, Yonghao (Author) Langdon, Terence G. (Author) |
| Date: | 25 September 2011 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/335082 |
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