In situ X-ray tomography observation of inhomogeneous deformation in semi-solid aluminium alloys

The aim of this paper is to report the very first in situ observations of the deformation behaviour of an Al–Cu alloy in the semi-solid state by using ultrafast, high-resolution X-ray microtomography. It is shown that this deformation is non-homogeneous and involves an accumulation of liquid at an i...

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Bibliographic Details
Published in:Scripta materialia 2009-09, Vol.61 (5), p.449-452
Main Authors: Terzi, S., Salvo, L., Suéry, M., Limodin, N., Adrien, J., Maire, E., Pannier, Y., Bornert, M., Bernard, D., Felberbaum, M., Rappaz, M., Boller, E.
Format: Article
Language:English
Subjects:
Aluminium alloys
Chemical and Process Engineering
Chemical Sciences
Deformation
Engineering Sciences
In situ X-ray tomography
Material chemistry
Pores
Semi-solid state
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Summary:The aim of this paper is to report the very first in situ observations of the deformation behaviour of an Al–Cu alloy in the semi-solid state by using ultrafast, high-resolution X-ray microtomography. It is shown that this deformation is non-homogeneous and involves an accumulation of liquid at an intergranular surface nearly perpendicular to the strain axis. Once the liquid is no longer able to feed such a region, micropores form and grow at this surface, finally leading to a crack.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2009.04.041