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Strain rate sensitivity of germanium-selenium glasses

Sensibilité au taux de déformation des verres de chalcogénures au Ge-Se


As describe in a previous publication of Su and al. [Su2013], we determine by constant strain rate indentation path the power law’s creep exponent of low T g binary chalcogenide glasses (Se and Ge-Se). We made this choice of composition for the various atomic structures taken by Ge-Se glasses when the composition is modified. Tests have been performed at room temperature (25 ± 0.5 ̊C). Results gives a good agreement with the literature for the selenium sample whereas results over Ge-Se glasses leads to link creep behavior and atomic glass structure. Furthermore, analysis of atomic force microscopy indentation pictures allowed us to identify a link between glass composition and strain rate sensibility. The most sensitive glass compositions are near mechanical percolation threshold composition.
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hal-02127567 , version 1 (13-05-2019)




  • HAL Id : hal-02127567 , version 1


Gwenole Trenvouez, Cedric Bernard, Mariette Nivard, Vincent Kéryvin, Jean-Pierre Guin. Strain rate sensitivity of germanium-selenium glasses. PNCS-ESG 2018, Jul 2018, Saint Malo, France. ⟨hal-02127567⟩
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