Recent Studies of Hydrogen Embrittlement in Structural Materials

Dan Eliezer, Ravit Silverstein

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations

Abstract

Mechanical properties of metals and their alloys are most often determined by interstitial atoms. Hydrogen, as one common interstitial element, is often found to degrade the fracture behavior and lead to premature or catastrophic failure in a wide range of materials, known as hydrogen embrittlement. This topic has been studied for more than a century, yet the basic mechanisms of such degradation remain in dispute for many metallic systems. This work attempts to link, experimentally and theoretically, between failure, caused by the presence of hydrogen, and second phases, lattice distortion, and deformation levels.The connection between hydrogen embrittlement and pathway is established through examination of the evolved microstructural state by hydrogen. Calculations performed by thermal desorption analysis showed the effectiveness of high trapping energy levels in preventing the hydrogen embrittlement phenomena. It was proved that the embrittlement model is highly affected by the trapping mechanisms. These results were confirmed by a diffusion calculation model and a theoretical model that predicts hydrogen trapping mechanisms.

Original languageEnglish
Pages (from-to)2233-2238
Number of pages6
JournalProcedia Structural Integrity
Volume13
DOIs
StatePublished - 1 Jan 2018
Event22nd European Conference on Fracture, ECF 2018 - Belgrade, Serbia
Duration: 25 Aug 201826 Aug 2018

Keywords

  • Hydrogen
  • Structure materials
  • Thermal desorption analysis (TDA)

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • General Materials Science
  • Civil and Structural Engineering

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