A solidification model for atomization

Prasad, Arvind, Mosbah, Salem, Henein, Hani and Gandin, Charles-André (2009). A solidification model for atomization. In: , ISIJ International. Special issue on cutting edge of studies in inclusions and precipitates behavior related to microstructure control. Conference on Cutting Edge of Studies in Inclusions and Precipitates Behavior Related to Microstructure Control, Kumamoto, Japan, (992-999). September 2008.


Author Prasad, Arvind
Mosbah, Salem
Henein, Hani
Gandin, Charles-André
Title of paper A solidification model for atomization
Conference name Conference on Cutting Edge of Studies in Inclusions and Precipitates Behavior Related to Microstructure Control
Conference location Kumamoto, Japan
Conference dates September 2008
Proceedings title ISIJ International. Special issue on cutting edge of studies in inclusions and precipitates behavior related to microstructure control   Check publisher's open access policy
Journal name Isij International   Check publisher's open access policy
Place of Publication Tokyo, Japan
Publisher Iron and Steel Institute of Japan
Publication Year 2009
Sub-type Fully published paper
ISSN 0915-1559
Volume 49
Issue 7 Sp. Iss. SI
Start page 992
End page 999
Total pages 9
Language eng
Abstract/Summary A microsegregation solidification model has been extended for an individual droplet falling through a stagnant gas during the atomization process. Assuming a uniform temperature within the droplet, the model takes into account nucleation undercooling and equiaxed growth of the dendritic and eutectic microstruc-tures until complete solidification.1 It predicts the temperature evolution and the chemical segregation within the droplet in terms of the percent of the dendritic and eutectic microstructures. Extensive experiments have been performed on Al-Cu droplets using the impulse atomization technique. The distribution of phases, cell spacing and segregation have been quantified earlier.2-4 It has been reported that the amount of eutectic in the droplets falls below the equilibrium prediction as the alloy composition increases. Successful comparison between the model results and the experiments leads to the conclusion that eutectic undercooling and eutectic recalescence play a very important role in the final percent of eutectic in the droplets. © 2009 ISIJ.
Subjects 0913 Mechanical Engineering
Keyword Atomization
Segregation
Solidification
Q-Index Code EX

Document type: Conference Paper
Collection: School of Mechanical & Mining Engineering Publications
 
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