Interaction between L2 droplets and L1/L interface in solidifying Al–Bi immiscible alloy

Interaction between L2 droplets and L1/L interface in solidifying Al–Bi immiscible alloy

Using synchrotron radiography, we observed the advancing L1/L interface and its interaction with L2 droplets during directional solidification of the Al-10wt% Bi immiscible alloy. Five forces act upon L2 droplets in front of the L1/L interface. The repulsive force that pushes the droplets away from...

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Veröffentlicht in:Materials letters 2016-11, Vol.182, p.351-354
Hauptverfasser: Lu, W.Q., Zhang, S.G., Hu, Q.D., Li, J.G.
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum base alloys
Bismuth
Decomposition
Directional solidification
Drag force
Droplets
Interfaces
Metal and alloys
Pushing
Radiography
Resultants
Synchrotron radiography
Synchrotrons
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Zusammenfassung:Using synchrotron radiography, we observed the advancing L1/L interface and its interaction with L2 droplets during directional solidification of the Al-10wt% Bi immiscible alloy. Five forces act upon L2 droplets in front of the L1/L interface. The repulsive force that pushes the droplets away from the interface is the largest force when the droplet radius (r) is smaller than 20.5µm, while Marangoni force is the largest one when 20.5µm
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2016.06.124