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A Modified Electrochemical Nanoindentation Setup for Probing Hydrogen-Material Interaction Demonstrated on a Nickel-Based Alloy

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Brinckmann,  Steffen
Nanotribology, Structure and Nano-/ Micromechanics of Materials, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;
Microstructure and Properties of Materials (IEK-2), Forschungszentrum Jülich, 52428, Germany;

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Citation

Ebner, A. S., Brinckmann, S., Plesiutschnig, E., Clemens, H., Pippan, R., & Maier-Kiener, V. (2020). A Modified Electrochemical Nanoindentation Setup for Probing Hydrogen-Material Interaction Demonstrated on a Nickel-Based Alloy. JOM-Journal of the Minerals Metals & Materials Society, 72(5), 2020-2029. doi:10.1007/s11837-020-04104-9.


Cite as: http://hdl.handle.net/21.11116/0000-0009-6ACE-9
Abstract
An electrochemical charging setup was implemented in a nanoindentation system to evaluate the sensitivity of technically relevant materials to hydrogen embrittlement. Corresponding changes in the nanomechanical properties such as the hardness, Young’s modulus and pop-in load can be measured and interpreted. A nickel-based alloy was examined in solution-annealed and aged condition. A hydrogen-induced hardness increase of 15 was measured for the solution-annealed sample. Aging the alloy leads to a reduced influence of hydrogen, lowering the hardness increase to 5. For the solution-annealed sample, hydrogen charging-induced surface steps were observed and characterized with laser confocal microscopy and electron backscatter diffraction to reveal plastic deformation. © 2020, The Author(s).