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Quantitative assessment of liquid Ga penetration into an aluminium alloy by high-resolution X-ray tomography

Record type: Article

We have evaluated the liquid Ga penetration into an aluminium alloy by high-resolution X-ray tomography. The 3D visualization of a crack together with its surrounding grain structure was performed with the help of the Ga penetration technique. It is found that the advance directions of the crack-tip were strongly influenced by the grain microstructure and the branching of the crack is affected by grain distribution. In this study, the liquid Ga not only acts as a contrast agent for grain boundaries, but also expands the volume of the Al alloy due to Ga diffusion and associated processes. The 3D strain between the grains has been determined by microstructural gauging technique, which uses micropores as marker points. The 3D expansion of the sample volume, the volume reduction of micropores, and the brittle fracture were evidently observed.

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Citation

Ohgaki, T., Toda, H., Sinclair, I., Buffiere, J.-Y., Ludwig, W., Kobayashi, T., Niimoni, M. and Akahori, T. (2006) Quantitative assessment of liquid Ga penetration into an aluminium alloy by high-resolution X-ray tomography Materials Science and Engineering: A, 427, (1-2), pp. 1-6. (doi:10.1016/j.msea.2005.07.050).

More information

Published date: 2006
Keywords: x-ray microtomography, grain boundary wetting, synchrotron radiation, aluminium, fatigue, ga penetration
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 43945
URI: http://eprints.soton.ac.uk/id/eprint/43945
ISSN: 0921-5093
PURE UUID: ec7d5864-2f78-48da-a2a7-38ee5e3294d2

Catalogue record

Date deposited: 02 Feb 2007
Last modified: 17 Jul 2017 15:16

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Contributors

Author: T. Ohgaki
Author: H. Toda
Author: I. Sinclair
Author: J.-Y. Buffiere
Author: W. Ludwig
Author: T. Kobayashi
Author: M. Niimoni
Author: T. Akahori

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