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Characterization of phases in an Al casting alloy by synchrotron tomography by Domonkos Tolnai; Hans Peter Degischer; János Lendvai is a Materials Science article available to read on EtoBox.

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## Abstract The microstructure of a gravity cast aluminium alloy is investigated, containing 8 wt% Si, 5 wt% Mg as alloying elements, and 0.6 wt% Fe as main impurity. The solidification starts with the formation of α‐Al dendrites, which are presented after subtraction of the interdendritic eutectic regions. There, α‐Al/Mg~2~Si eutectic solidifies from the remaining Mg‐ and Si‐rich liquid forming coral‐like so‐called ‘Chinese script’ Mg~2~Si. Simultaneously, an AlFeSi phase solidifies in 2D shapes. At last, the remaining liquid freezes as fine structured α‐Al/Mg~2~Si/Si ternary eutectic. Synchrotron tomographic measurements were carried out at ESRF ID19, to reveal the 3D microstructure with a spatial resolution of <1 μm. The phases of the eutectics, the AlFeSi phase and the α‐Al dendrites could be segmented, and quantitatively analysed by 3D image processing and analysis.

Who reads Characterization of phases in an Al casting alloy by synchrotron tomography?

Author

Domonkos Tolnai; Hans Peter Degischer; János Lendvai

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley; Wiley - V C H Verlag GmbbH & Co. (ISSN 0031-8965)

Published

2009

Language

EN

Field

Materials Science (Physical Sciences)