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Broad Range of Charecterization: Sub-nanometer to Giga-Pascal range!
Microstructural manipulation at sub-micron scale to produce metallic alloys with exceptional properties.
The image on the left shows an Atom Probe Tomography reconstruction of a high entropy alloy. Nano-precipitates have resulted in exceptional mechanical strength. The same phase features have been shown to cause a unique nano-scale galvanic coupling that showed a 'basket weave' type corrosion morphology!
More on this can be read, free in the papers:
Surface degradation mechanisms in precipitation-hardened high-entropy alloys
In situ scratch testing
In a first, in situ scratch testing developed by Bruker. Inc was used as a characterization tool to understand the friction behavior of a multi-phase material. The in situ scratch test carried out using a PI88 SEM Picoindenter (Hysitron, Inc., Minneapolis, MN USA); used to directly observe the phase-specific scratch behavior inside a FEI Quanta dual beam focused ion beam (FIB) microscope. A diamond cube-corner tip was used to create scratch tracks near dendrite-matrix interfaces. Since the experiments were carried out inside a high-vacuum SEM chamber, the influence of surface oxidation, contamination and ambient moisture is likely to be small.
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