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

Anna Sophie Ebner; Steffen Brinckmann; Ernst Plesiutschnig; Helmut Clemens; Reinhard Pippan; Verena Maier-Kiener

doi:10.1007/s11837-020-04104-9

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

Anna Sophie Ebner, Steffen Brinckmann, Ernst Plesiutschnig, Helmut Clemens, Reinhard Pippan, Verena Maier-Kiener

Chair of Physical Metallurgy (420)

Research output: Contribution to journal › Article › Research › peer-review

4 Citations (Scopus)

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.

Original language	English
Pages (from-to)	2020-2029
Number of pages	10
Journal	JOM
Volume	72.2020
Issue number	5
DOIs	https://doi.org/10.1007/s11837-020-04104-9
Publication status	Published - 16 Mar 2020

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AU - Clemens, Helmut

AU - Pippan, Reinhard

AU - Maier-Kiener, Verena

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AB - 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.

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

Abstract

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