This paper describes a series of experiments performed on BM05 at the European Synchrotron Radiation Facility (ESRF), dedicated to the analysis of a mushy zone evolution in a fixed temperature gradient. A mushy zone is the partially solid/partially liquid zone that is formed when solidification proceeds with the development of dendrites, and it has been recently shown that synchrotron X-ray radiography is a powerful technique, perfectly adapted for such a study. In situ and real-time characterisation clearly evidences the microstructural changes of the mushy zone during the holding stage, and measurements of the mushy zone boundary positions using image processing enable us to analyse the successive regimes. Each regime is directly related to solute diffusion mechanisms, namely temperature gradient zone melting, solute diffusion in the inter-dendritic liquid channels due to the solid-fraction gradient and solute diffusion in the melt.
Georges Salloum Abou Jaoudé 1, 2 ; Guillaume Reinhart 1, 2 ; Henri Nguyen-Thi 1, 2 ; Hervé Combeau 3 ; Miha Založnik 3 ; Thomas Schenk 3 ; Tamzin Lafford 4
@article{CRMECA_2013__341_4-5_421_0,
author = {Georges Salloum Abou Jaoud\'e and Guillaume Reinhart and Henri Nguyen-Thi and Herv\'e Combeau and Miha Zalo\v{z}nik and Thomas Schenk and Tamzin Lafford},
title = {\protect\emph{In situ} experimental observation of the time evolution of a dendritic mushy zone in a fixed temperature gradient},
journal = {Comptes Rendus. M\'ecanique},
pages = {421--428},
publisher = {Elsevier},
volume = {341},
number = {4-5},
year = {2013},
doi = {10.1016/j.crme.2013.01.013},
language = {en},
}
TY - JOUR AU - Georges Salloum Abou Jaoudé AU - Guillaume Reinhart AU - Henri Nguyen-Thi AU - Hervé Combeau AU - Miha Založnik AU - Thomas Schenk AU - Tamzin Lafford TI - In situ experimental observation of the time evolution of a dendritic mushy zone in a fixed temperature gradient JO - Comptes Rendus. Mécanique PY - 2013 SP - 421 EP - 428 VL - 341 IS - 4-5 PB - Elsevier DO - 10.1016/j.crme.2013.01.013 LA - en ID - CRMECA_2013__341_4-5_421_0 ER -
%0 Journal Article %A Georges Salloum Abou Jaoudé %A Guillaume Reinhart %A Henri Nguyen-Thi %A Hervé Combeau %A Miha Založnik %A Thomas Schenk %A Tamzin Lafford %T In situ experimental observation of the time evolution of a dendritic mushy zone in a fixed temperature gradient %J Comptes Rendus. Mécanique %D 2013 %P 421-428 %V 341 %N 4-5 %I Elsevier %R 10.1016/j.crme.2013.01.013 %G en %F CRMECA_2013__341_4-5_421_0
Georges Salloum Abou Jaoudé; Guillaume Reinhart; Henri Nguyen-Thi; Hervé Combeau; Miha Založnik; Thomas Schenk; Tamzin Lafford. In situ experimental observation of the time evolution of a dendritic mushy zone in a fixed temperature gradient. Comptes Rendus. Mécanique, 10th International Meeting on Thermodiffusion, Volume 341 (2013) no. 4-5, pp. 421-428. doi : 10.1016/j.crme.2013.01.013. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2013.01.013/
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