Nanomechanical evaluation of the protectiveness of nitrided layers against hydrogen embrittlement

M. Asgari, A. Barnoush*, R. Johnsen, R. Hoel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

In this work, the nitrided layer on austenitic AISI 316L stainless steels were examined by means of in situ electrochemical nanoindentation, and the effect of electrochemically charged hydrogen on the mechanical properties were investigated. By using this method, changes in the mechanical properties due to the absorption of atomic hydrogen at different nitride layer depths have been traced. One important finding is that hydrogen charging of the nitriding layer can soften the layer and reduce the layer hardness, and the reduction of the nitrogen concentration in the nitride layer reduces this softening effect.

Original languageEnglish
Pages (from-to)51-60
Number of pages10
JournalCorrosion Science
Volume62
DOIs
Publication statusPublished - Sept 2012
Externally publishedYes

Keywords

  • A. Stainless steel
  • B. AFM
  • B. EPMA
  • C. Hydrogen embrittlement

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