A comparative study about the hydrogen embrittlement susceptibility of Eurofer'97 and conventional 9%Cr ferritic/martensitic steels

M.F. Maday, G. Filacchioni, L. Pilloni

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Abstract

Constant displacement rate tests have been performed in conjunction with the electrochemical hydrogen charging technique to evaluate the relative susceptibility to hydrogen embrittlement of the martensitic steels: Eurofer'97, T91 and EM10. Mechanical property and failure mode results associated with any specific hydrogenation condition were fairly reproducible in the conventional alloys, showing a minor tendency to hardening and a major resistance to embrittlement effect at high hydrogen content of T91 compared to EM10. The underlying mechanism for damage could be identified and tentatively explained, based on fractographic evidences and microstructural arguments. Conversely, the results of replicated tests on Eurofer were significantly scattered and gave rise to embrittlement behaviours fitting those of either T91 or EM10, probably due to local heterogeneity of grain boundary chemistry. © 2003 IEEE.
Original languageEnglish
Publication statusPublished - 2003
Externally publishedYes
Event20th IEEE/NPSS Symposium on Fusion Engineering, SOFE 03 - , United States
Duration: 1 Jan 2003 → …

Conference

Conference20th IEEE/NPSS Symposium on Fusion Engineering, SOFE 03
CountryUnited States
Period1/1/03 → …

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All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering

Cite this

Maday, M. F., Filacchioni, G., & Pilloni, L. (2003). A comparative study about the hydrogen embrittlement susceptibility of Eurofer'97 and conventional 9%Cr ferritic/martensitic steels. Paper presented at 20th IEEE/NPSS Symposium on Fusion Engineering, SOFE 03, United States.