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A pioneer in-situ synchrotron X-ray nanodiffraction approach for characterization and visualization of strain fields induced by nanoindentation in amorphous materials is introduced. In-situ nanoindentation experiments were performed in transmission mode using a monochromatic and highly focused sub-micron X-ray beam on 40 lm thick Zr-based bulk metallic glass under two loading conditions. Spatially resolved X-ray diffraction scans in the deformed volume of Zr-based bulk metallic glass covering an area of 40 Â 40 lm 2 beneath the pyramidal indenter revealed twodimensional map of elastic strains. The largest value of compressive elastic strain calculated from diffraction data at 1 N load was À0.65%. The region of high elastic compressive strains (<À0.3%) is located beneath the indenter tip and has radius of 7 lm. V

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Thermal evolution of the structure of glass-coated nanocrystalline FeCoMoB microwire during its devitrification has been studied. It is shown that annealing at the temperature above 411 o C leads to the formation of crystalline α-FeCo grains with diameter ~ 12 nm. Annealing at higher temperature increases the crystalline weight fraction up to 40% at 565 o C. However, crystalline grains size increases very weakly to ~ 13 nm. The thermal expansion coefficient of nanocrystalline microwire decreases by one half comparing to that of the amorphous precursor.