Measuring Hydrogen Distributions in Iron and Steel Using Neutrons

A. Griesche, E. Dabah, T. Kannengiesser, A. Hilger, N. Kardjilov, I. Manke, B. Schillinger

Research output: Contribution to journalConference articlepeer-review

12 Scopus citations

Abstract

Neutron tomography has been applied to investigate the mechanism of hydrogen assisted cracking in technical iron and supermartensitic steel. Rectangular technical iron block samples showed blistering due to intense hydrogen charging and the tomographic method revealed in situ the spatial distribution of hydrogen and cracks. Hydrogen accumulated in a small region around cracks and the cracks are filled with hydrogen gas. Cracks close to the surface contained no hydrogen. Hydrogenous tensile test samples of supermartensitic steel were pulled until rupture and showed hydrogen accumulations at the notch base and in the plastically deformed region around the fracture surface.

Original languageEnglish
Pages (from-to)445-450
Number of pages6
JournalPhysics Procedia
Volume69
DOIs
StatePublished - 1 Jan 2015
Externally publishedYes
EventProceedings of the 10th World Conference on Neutron Radiography, WCNR-10 2014 - Grindelwald, Switzerland
Duration: 5 Oct 201410 Oct 2014

Keywords

  • hydrogen distribution
  • neutron tomography
  • steel

ASJC Scopus subject areas

  • General Physics and Astronomy

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