Dendrite Evolution in Aluminum Alloys

The dendrites formed during solidification of metals directly impact the structural and chemical properties of the final bulk material. In this project, we use high resolution 4D synchrotron x-ray tomography to record dendrite growth in real time. In particular, we study how alloy composition and cooling rate affect dendrite tip radii and curvatures, dendrite tip velocities, solid and liquid volume fractions, interface area evolution, secondary branch spacings, crystallographic growth directions, morphological symmetries, as as solid, liquid, and interface chemistries.

Participants:

Tiberiu Stan, Ph.D.