Regensburg 2025 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 7: Materials for the Storage and Conversion of Energy

MM 7.2: Talk

Monday, March 17, 2025, 16:00–16:15, H22

Spherical nanoindentation during electro chemical nanoindentation — •Verena Maier-Kiener, Stefan Zeiler, and Anna Jelinek — Montanuniversität Leoben, Leoben, Österreich

Nanoindentation enables efficient characterization of material flow behavior, offering reliable results with minimal effort. While established for hardness and Young*s modulus, its potential for deriving localized flow curves remains underexplored due to challenges in correlating spherical indentation and uniaxial data. A calibration procedure addressing tip imperfections allows strain-rate-controlled experiments and accurate constraint factor evaluation. Using an innovative in-situ electrochemical charging method, side-charging cell, it is shown that electrochemical charging increases hardness and flow stress while reducing the constraint factor, providing valuable insights into deformation behavior.

Keywords: Nanoindentation; in situ electrochemical micromechanics; Metals; operando; Side Charging