Time-resolved synchrotron tomographic quantification of deformation-induced flow in a semi-solid equiaxed dendritic Al–Cu alloy

The rheology of semi-solid alloys has been studied by a novel in situ tomographic technique. Via extruding an equiaxed Al–15wt.%Cu alloy, the inhomogeneous coherent compression of the α-Al grains was quantified, including the interdendritic channel closure and formation of a liquid extrudate. This i...

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Bibliographic Details
Published inScripta materialia Vol. 103; pp. 69 - 72
Main Authors Cai, B., Karagadde, S., Rowley, D., Marrow, T.J., Connolley, T., Lee, P.D.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.07.2015
Subjects
ALUMINUM ALLOYS (50 TO 99 AL)
Aluminum base alloys
Channels
Compressing
COPPER ALUMINUM ALLOYS
DEFORMATION
DENDRITIC STRUCTURES
Extruding
Liquid flow
Liquids
Segregation
Segregations
Semi-solid deformation
Semi-solid processing
SYNCHROTRONS
X-ray tomography
X-ray tomography
Liquid flow
Semi-solid deformation
Segregation
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Summary:The rheology of semi-solid alloys has been studied by a novel in situ tomographic technique. Via extruding an equiaxed Al–15wt.%Cu alloy, the inhomogeneous coherent compression of the α-Al grains was quantified, including the interdendritic channel closure and formation of a liquid extrudate. This investigation not only provides important insights into the microstructural changes occurring during semi-solid deformation, but also offers a validation benchmark for segregation and rheological models.
Bibliography:ObjectType-Article-1
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ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2015.03.011