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Journal of Materials Engineering and Performance

Erschienen in:

01.05.2013

Real-Time Observation on Evolution of Droplets Morphology Affected by Electric Current Pulse in Al-Bi Immiscible Alloy

verfasst von: Jing Zhu, Tongmin Wang, Fei Cao, Hongwang Fu, Yanan Fu, Honglan Xie, Tiqiao Xiao

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 5/2013

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Abstract

The evolution of Bi-rich droplets morphology in a solidifying Al-Bi immiscible alloy was directly observed using a synchrotron microradiography technique. The electric current pulse (ECP) was applied to control the solidification process of Al-Bi immiscible alloy. It was found that the electromagnetic pinch force and Marangoni force induced by ECP and temperature gradient, respectively, can significantly affect the distribution of Bi-rich droplets. The electromagnetic pinch force drove the droplets from the center to side; meanwhile, the Marangoni force lifted the droplets from the bottom to the top. As a result, the droplets finally distributed with a manner of “inverted triangle.”

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Titel: Real-Time Observation on Evolution of Droplets Morphology Affected by Electric Current Pulse in Al-Bi Immiscible Alloy
verfasst von: Jing Zhu
Tongmin Wang
Fei Cao
Hongwang Fu
Yanan Fu
Honglan Xie
Tiqiao Xiao
Publikationsdatum: 01.05.2013
Verlag: Springer US
Erschienen in: Journal of Materials Engineering and Performance / Ausgabe 5/2013
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-012-0421-y

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