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Viscosity Characteristic in Metallic Melts with Medium/Short-Range Order Structures |
| BIAN Xiu-Fang1;ZHANG Jing-Xiang1;JIA Yu-Bo1; SUN Min-Hua2 |
| 1Key Laboratory of Liquid Structure and Heredity of Materials (Ministry of Education), Shandong University, Jinan 250061
2Beijing Synchrotron Radiation Laboratory, Institute of High Energy Physics, Chinese Academy of Sciences, PO Box 918, Beijing 100039 |
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| Cite this article: |
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BIAN Xiu-Fang, ZHANG Jing-Xiang, JIA Yu-Bo et al 2005 Chin. Phys. Lett. 22 644-647 |
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Abstract Viscosities and liquid structure of alloys Cu75Al25, Cu87Sn13 and Al-12.5%Si and pure metals Cu and Sn are investigated by using torsional oscillation viscometry and high temperature x-ray diffractometry. The viscosities of pure metals and eutectic alloy melts along with the short-range order structure are found to follow the Arrhenius law in a wide range of temperature above the liquidus. The breakpoints in Arrhenius plots emerge when the structures of alloy melts are transformed from the medium-range order structure to the short-range order structure. It has been found that the change of the viscosity of the metallic alloys is a characteristic of microstructure transformation in the related melts.
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| Keywords:
61.25.Mv
61.20.Ne
66.20.+d
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Published: 01 March 2005
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