The synchrotron-based 3D X-ray diffraction (3DXRD) technique known as high-energy diffraction microscopy (HEDM) can be used to nondestructively measure 3D microscale information including the elastic strain tensor, crystallographic orientation, location, and volume of each grain for many hundreds to thousands of grains. For this reason, HEDM is arguably one of the most powerful experimental tools we have for mapping the interplay between micro- and macroscale material behavior.
Currently, HEDM is only available at select synchrotrons around the world. Here, we present a laboratory-scale HEDM instrument that utilizes an indium liquid-metal jet X-ray source to produce a monochromatic 24 keV parallel box beam suitable for near-field and far-field HEDM measurements on bulk (~1 mm) single crystal, polycrystalline, or granular materials, particularly those composed of light elements (e.g., Al, Mg, Li). We discuss the design and construction of this instrument and present preliminary results.
The webinar is done in cooperation with Proto XRD. It is 40 minutes followed by a 5 minute Q&A.
Speaker
Dr. Ashley Bucsek
Ashley Bucsek is an Assistant Professor at the University of Michigan in the Department of Mechanical Engineering. She focuses her research on the study of defects, microstructures, mechanics of materials and their effects on behavior, properties and performance. Ashley specializes in development of 3D in-situ characterization tools using X-ray microscopy. Prior to her position at Ann Arbor, Ashley worked as post doc at University of Minnesota and was awarded President’s Postdoctoral fellowship to design a highly reversible ferroelectric capacitor for integration into a waste heat energy conversion. She also measured interfacial strain fields in connection to hysteresis and functional fatigue using dark field microscopy at ESRF.
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