Mapping strain fields induced in Zr-based bulk metallic glasses during in-situ nanoindentation by X-ray nanodiffraction

Gamcová, J.; Krywka, C.; Bednarčík, J.; Breguet, J. M.; Michalik, Š.; Michler, J.; Mohanty, G.; Franz, H.; Wehrs, J.

doi:10.1063/1.4939981

Journal Article

PUBDB-2016-03385

Mapping strain fields induced in Zr-based bulk metallic glasses during in-situ nanoindentation by X-ray nanodiffraction

Gamcová, J. (Corresponding author)Extern* ; Mohanty, G.Extern* ; Michalik, Š.Extern* ; Wehrs, J.Extern* ; Bednarčík, J.DESY* ; Krywka, C.HZG* ; Breguet, J. M.Extern* ; Michler, J.Extern* ; Franz, H.DESY*

2016
American Inst. of Physics Melville, NY

Applied physics letters 108(3), 031907 - (2016) [10.1063/1.4939981]

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Please use a persistent id in citations: doi:10.1063/1.4939981

Abstract: A pioneer in-situ synchrotron X-ray nanodiffraction approach for characterization and visualization of strain fields induced by nanoindentation in amorphousmaterials is introduced. In-situnanoindentation experiments were performed in transmission mode using a monochromatic and highly focused sub-micron X-ray beam on 40 μm 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 × 40 μm2 beneath the pyramidal indenter revealed two-dimensional map of elastic strains. The largest value of compressive elastic strain calculated from diffraction data at 1 N load was −0.65%. The region of high elastic compressive strains (<−0.3%) is located beneath the indenter tip and has radius of 7 μm.

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