The rupture of a single liquid aluminium alloy film

The present study is based on the idea of understanding the rupture of films in metal foams by studying free standing metallic films as a model system. Liquid dynamics, the velocity of the rupturing material as well as the behaviour of ceramic particles inside the melt were analysed optically ex sit...

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Bibliographic Details
Published inSoft matter Vol. 1; no. 26; pp. 4711 - 4716
Main Authors Heim, K, García-Moreno, F, Vinod Kumar, G. S, Rack, A, Banhart, J
Format Journal Article
LanguageEnglish
Published England 14.07.2014
Subjects
Dynamics
Liquids
Magnesium
Melts
Oxides
Oxygen content
Rupture
Synchrotrons
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Summary:The present study is based on the idea of understanding the rupture of films in metal foams by studying free standing metallic films as a model system. Liquid dynamics, the velocity of the rupturing material as well as the behaviour of ceramic particles inside the melt were analysed optically ex situ and by synchrotron X-ray radiography in situ . It was found that the resistance of films to rupture is mainly based on the interaction between solid particles and an immobile oxide skin, the formation of which depends on the oxygen content of the surrounding atmosphere and the presence of magnesium. Synchrotron X-ray radiograms showing three stages of the rupture of an AlSi9/TiB2/6p film pulled in air. White circles indicate a fixed particle cluster, and red circles indicate the free moveable ones. The solid black contour line at t = 0 ms marks the origin of rupture. The dotted black lines at t + 25 ms and t + 302 ms mark the edge of the expanding gap in the film.
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ISSN:1744-683X
1744-6848
DOI:10.1039/c4sm00487f