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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ludwig, Andreas
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Topics
Publications (11/11 displayed)
- 2023Hypo-peritectic TRIS–NPG in a stationary temperature gradientcitations
- 2022On/off directional solidification of near peritectic TRIS-NPG with a planar but tilted solid/liquid interface under microgravity conditions.citations
- 2022In Situ Observation of Coupled Growth Morphologies in Organic Peritectics Under Pure Diffusion Conditionscitations
- 2020Investigation of Peritectic Solidification Morphologies by Using the Binary Organic Model System TRIS-NPGcitations
- 2019Calibration of Numerical and Determination of Physical Parameters for the Organic Model System TRIS-NPG
- 2018Investigation on Peritectic Layered Structures by Using the Binary Organic Components TRIS-NPG as Model Substances for Metal-Like Solidification
- 2018Investigation on the Binary Organic Components TRIS-NPG as Suitable Model Substances for Metal-Like Solidification
- 2018Investigation on the Liquid Flow ahead of the Solidification Front During the Formation of Peritectic Layered Solidification Structure
- 2017Phase-field modelling of ternary eutetic solidification in hot dip galvanization
- 2014Influence of dendritic morphology on the calculation of macrosegregation in steel ingotcitations
- 2009Thermal stability of a binary non-faceted/non-faceted peritectic organic alloy at elevated temperaturescitations
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article
On/off directional solidification of near peritectic TRIS-NPG with a planar but tilted solid/liquid interface under microgravity conditions.
Abstract
Understanding phenomena that occur during gradient annealing and initial transient of Bridgman-type directional solidification processes is essential for producing high-performance materials with specific properties. An experiment with alternating long time gradient annealing and directional solidification periods was performed on the International Space Station, using a near-peritectic transparent TRIS-NPG alloy. It transpired that accumulation of solute ahead of the solid/liquid interface continued to progress and that steady-state growth conditions were never achieved. The results demonstrate that (i) liquid being squeezed out from the mush during the long time gradient annealing period disables the formation of a flat interface; (ii) a thermal bias caused a slightly tilted planar solidification front; and (iii) growth of the metastable pro-peritectic α-phase led to the formation of a supersaturated solid that solidified with an intriguing low growth rate.