|
|||||
|
|
Pressure-induced crystallization in a bulk amorphous Zr-based alloy |
|
| Authors: | Duanwei He Q ZhaoWH Wang RZ CheJ Liu XJ LuoWK Wang |
| Institution: | a LANSCE-12, Los Almos Neutron Science Center, Los Almos National Laboratory, MS-H805, Los Almos, NM 87545, USA b Institute of Physics, Chinese Academy of Sciences, Beijing 10080, People's Republic of China c BSRF, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 10039, People's Republic of China d Institute of Atomic and Molecular Physics, Chendu University of Science and Technology, Chendu 610065, People's Republic of China |
| Abstract: | Crystallization of multi-component on amorphous Zr-based alloy (Zr41Ti14Cu12.5Ni9Be22.5C1) is investigated at different pressures and temperatures. We have previously found that the primary crystallization temperature decreases with increasing pressure below 6 GPa, and the crystallization follows a different process under high pressure when compared to that at ambient pressure. In this work, pressure-induced crystallization is observed by in situ X-ray diffraction (XRD) using synchrotron radiation in a diamond anvil cell at ∼25 GPa and room temperature. This phase transition between amorphous and crystalline is reversible and the crystallized sample returns to the amorphous state during decompression. The mechanism for pressure-induced crystallization is discussed. We suggest that the crystallized phases under high pressure are interstitial solid solution phases formed from the amorphous matrix without long-range atomic rearrangements. |
| Keywords: | M190 P320 |
| 本文献已被 ScienceDirect 等数据库收录！ | |