Effect of ultra-grain refinement on the tensile behaviour of an austenitic steel charged with hydrogen

Arnaud Macadre, Koichi Tsuboi, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The behavior of a metastable austenitic steel was investigated. The chemical composition allows a reversion treatment from martensite to produce different austenite grain sizes (1-65 μm). Cathodic charging was used to investigate the mechanical response of the steel to pre-charged hydrogen, and whether ultra-grain refinement is an effective means to curb hydrogen embrittlement. The ultra-fine grained material retained a ductile behavior despite the large strength increase, with some intergranular surface cracking while the larger grained material showed large areas of brittle cracking. TEM observation showed the effect of hydrogen charging on the dislocation behavior.

Original languageEnglish
Title of host publicationMaterials Science and Technology Conference and Exhibition 2013, MS and T 2013
Pages2361-2368
Number of pages8
Publication statusPublished - Feb 11 2014
EventMaterials Science and Technology Conference and Exhibition 2013, MS and T 2013 - Montreal, QC, Canada
Duration: Oct 27 2013Oct 31 2013

Publication series

NameMaterials Science and Technology Conference and Exhibition 2013, MS and T 2013
Volume4

Other

OtherMaterials Science and Technology Conference and Exhibition 2013, MS and T 2013
CountryCanada
CityMontreal, QC
Period10/27/1310/31/13

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials

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    Macadre, A., Tsuboi, K., Nakada, N., Tsuchiyama, T., & Takaki, S. (2014). Effect of ultra-grain refinement on the tensile behaviour of an austenitic steel charged with hydrogen. In Materials Science and Technology Conference and Exhibition 2013, MS and T 2013 (pp. 2361-2368). (Materials Science and Technology Conference and Exhibition 2013, MS and T 2013; Vol. 4).