title: Real-time observation of dendrite coarsening in Sn-13%Bi alloy by synchrotron microradiography.
abstract: An improved synchrotron microradiography technique is being used to study dendrite growth and coarsening in Sn-13%Bi alloy in real time. The morphology of growing dendrites can be well resolved with reasonable image contrast. Dendrite arm remelting, coalescence, and fragmentation have been observed in a real alloy and in real time during solidification under controlled thermal gradients and cooling rates. This research opens a different window to the study of alloy solidification and enables unambiguous understanding of solidification processes in optically opaque, metallic alloys.
authors.affiliation: Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut 06269-3136, USA.
authors.forename: B
authors.initials: B
authors.lastname: Li
authors.forename: H D
authors.initials: HD
authors.lastname: Brody
authors.forename: A
authors.initials: A
authors.lastname: Kazimirov