On the interest of microgravity experimentation for studying convective effects during the directional solidification of metal alloys

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• 作者：Henri Nguyen-Thi ; ^{henri.nguyen-thi@im2np.fr} ; Guillaume Reinhart ; Bernard Billia
• 关键词：Directional solidification ; Microstructures ; Convection ; Microgravity ; In situ characterization ; Metallic alloys
• 刊名：Comptes Rendus Mécanique
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：345
• 期：1
• 页码：66-77
• 全文大小：2535 K
• 卷排序：345

文摘

Under terrestrial conditions, solidification processes are often affected by gravity effects, which can significantly influence the final characteristics of the grown solid. The low-gravity environment of space offers a unique and efficient way to eliminate these effects, providing valuable benchmark data for the validation of models and numerical simulations. Moreover, a comparative study of solidification experiments on earth and in low-gravity conditions can significantly enlighten gravity effects. The aim of this paper is to give a survey of solidification experiments conducted in low-gravity environment on metal alloys, with advanced post-mortem analysis and eventually by in situ and real-time characterization.