The Weakest Link

Degradation of a weld through interaction with hydrogen

Authors

  • Jonas Cop Ghent University
  • Charlot Depestel Ghent University
  • Nathalie Saikali Ghent University
  • Sharon Temmerman Ghent University
  • Dorien Zeebroek Ghent University

DOI:

https://doi.org/10.25609/sure.v5.4182

Keywords:

Welding; hydrogen-induced cracking

Abstract

This work evaluates the effect of hydrogen on welds in martensitic steels. In-situ constant-load tensile testing of a weld of HB450 steel shows that hydrogen-induced cracks appear in the filler material, which is capable of trapping the highest amount of hydrogen, as indicated by thermal desorption spectroscopy (TDS). Further crack propagation takes place in the part of the heat affected zone (HAZ) with the highest hardness.

Additional Files

Published

2019-12-03