Critical grain size to limit the hydrogen-induced ductility drop in a metastable austenitic steel

Arnaud Macadre, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

The metastable austenitic stainless steel is Fe-16Cr-10Ni, of which the grain size can be controlled between 1 and 21 μm. Hydrogen precharging causes a critical drop in ductility during tensile tests for the largest grain size (21 μm). In order to understand how efficient grain refinement is against hydrogen-induced ductility reduction, by varying the heat treatment conditions, it was possible to manufacture six different grain sizes and pinpoint the grain size at which the drop of ductility is critical. This change in ductility was associated with a transition from fully ductile fracture surface to a fracture surface composed of dimples, quasi-cleavages and intergranular fracture.

Original languageEnglish
Pages (from-to)10697-10703
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume40
Issue number33
DOIs
Publication statusPublished - Sep 7 2015

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Fingerprint Dive into the research topics of 'Critical grain size to limit the hydrogen-induced ductility drop in a metastable austenitic steel'. Together they form a unique fingerprint.

Cite this