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Compression Behaviour of Bulk Metallic Glasses and Binary Amorphous Alloy |
| LI Gong1;LIU Jing2;LIU Ri-Ping1 |
| 1Key Lab Metastable Material Science and Technology, Qinhuangdao 066004 2BSRF, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039 |
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| Cite this article: |
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LI Gong, LIU Jing, LIU Ri-Ping 2007 Chin. Phys. Lett. 24 2323-2326 |
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Abstract The compression properties of Zr41Ti14Cu12.5Ni10Be22.5, Zr44.4Nb7Cu13.5Ni10.8Be24.3 bulk metallic glasses and Ni77P23 binary amorphous alloy are investigated at room temperature up to 24GPa, 39GPa and 30.5GPa, respectively, using in-situ high pressure energy dispersive x-ray
diffraction with a synchrotron radiation source. The pressure--volume
relationship of Ni77P23 amorphous alloy is consistent well with the second order Birch--Murnaghan (B-M) equation within the experimental pressure range. However, under higher pressure, the experimental data of Zr-based specimens deviate from the B-M equation. Compare to the binary amorphous alloy, less excess free volume existing in the bulk metallic glass and multi-component atomic configuration results in a two-stage relationship between
compressibility and pressure.
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| Keywords:
61.43.Dq
62.50.+p
61.10.-i
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Received: 15 April 2007
Published: 25 July 2007
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