Abstract
The liquid to solid transformation of ternary Ag42.4Cu21.6Sb36 eutectic alloy was accomplished in an ultrasonic field with a frequency of 35 kHz, and the growth mechanism of this ternary eutectic was examined. Theoretical calculations predict that the sound intensity in the liquid phase at the solidification interface increases gradually as the interface moves up from the sample bottom to its top. The growth mode of (ε + θ + Sb) ternary eutectic exhibits a transition of “divorced eutectic—mixture of anomalous and regular structures—regular eutectic” along the sample axis due to the inhomogeneity of sound field distribution. In the top zone with the highest sound intensity, the cavitation effect promotes the three eutectic phases to nucleate independently, while the acoustic streaming efficiently suppresses the coupled growth of eutectic phases. In the meantime, the ultrasonic field accelerates the solute transportation at the solid-liquid interface, which reduces the solute solubility of eutectic phases.
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References
Ohsaka K, Trinh E H. Dynamic nucleation of ice induced by a single stable cavitation bubble. Appl Phys Lett, 1998, 73: 129–132
Zhai W, Hong Z Y, Xie W J, et al. Solidification characteristics of Pb-Sb hypereutectic alloy within ultrasonic field. Chin Sci Bull, 2007, 52(6): 844–848
Chamuel J R. Transient Schlte wave transmission along liquid-solid interfaces. J Acoust Soc Am, 1988, 83(4): 1336–1353
Zhang X, Inada T, Tezuka A. Ultrasonics induced nucleation of ice in water containing air bubbles. Ultrason Sonochem, 2003, 10(2): 71–76
Lee C P, Wang T G. The effects of pressure on the nucleation rate of undercooled liquid. J Appl Phys, 1992, 71: 5721–5723
Hunt J D, Jackson K A. Nucleation of solid in an undercooled liquid by cavitation. J Appl Phys, 1966, 37: 254–257
Wei B. Unidirectional dendritic solidification under longitudinal resonant vibration. Acta Metall Mater, 1992, 40(1): 2739–2751
Chow R, Blindt R, Chivers R, et al. The sonocrystallisation of ice in source solutions: Primary and secondary nucleation. Ultrasonics, 2003, 41: 595–604
Swallowe G M, Field J E, Rees C S, et al. A photographic study of the effect of ultrasound on solidification. Acta Metall, 1989, 37(3): 961–967
Li J W, Momono T. Effect of ultrasonic output power on refining the crystal structures of ingots and its experimental simulation. J Mater Sci Technol, 2005, 21(1): 47–52
Campell J. Effect of vibration during solidification. Int Metall Rev, 1981, 26(2): 7–103
Ruan Y, Cao C D, Wei B B. Rapid growth of ternary eutectic under high undercooling conditions. Sci China Ser G-Phys Mech Astron, 2004, 47(6): 717–728
Baber B P, Putterman S J. Observation of synchronous picosecond sonoluminescence. Nature, 1991, 352: 318–320
Hickling R. Transient high-pressure solidification associated with cavitation in water. Phys Rev Lett, 1994, 73: 2853–2855
Xie W J, Cao C D, Lü Y J, et al. Eutectic growth under acoustic levitation conditions. Phys Rev E, 2002, 66: 061601
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Supported by the National Natural Science Foundation of China (Grant Nos. 50121101 and 50395105)
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Zhai, W., Hong, Z. & Wei, B. Ternary eutectic growth of Ag-Cu-Sb alloy within ultrasonic field. SCI CHINA SER G 50, 500–508 (2007). https://doi.org/10.1007/s11433-007-0043-9
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DOI: https://doi.org/10.1007/s11433-007-0043-9