Abstract
Over the last 20 years, time-resolved high-resolution x-ray imaging techniques have become established as methods of choice for in situ studies of solidification microstructure formation in metallic alloys. Using high-brilliance x-radiation delivered at modern synchrotrons, combined with the most recent advances in x-ray cameras and optics, it is now possible to capture real-time video sequences with projection image resolutions down to 100 nm at frame rates of 20 Hz. This article presents some illustrative examples of the current capabilities of in situ x-ray video microscopy in terms of radiographic and topographic imaging as a platform for studying microstructure pattern formation, growth dynamics, and other topics related to metallic alloy solidification.
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