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

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)

Externe Organisationseinheiten

  • Böhler Edelstahl GmbH & Co KG, Kapfenberg
  • Max-Planck-Institut für Eisenforschung GmbH, Düsseldorf
  • Erich Schmid Institute of Materials Science of the Austrian Academy of Sciences, Leoben

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.

Details

OriginalspracheEnglisch
Seiten (von - bis)2020-2029
Seitenumfang10
FachzeitschriftJOM
Jahrgang72.2020
Ausgabenummer5
DOIs
StatusVeröffentlicht - 16 Mär 2020