Hydrogen Embrittlement Behavior of Plastically Pre-Strained and Cathodically Hydrogen-Charged 316H Grade Austenitic Stainless Steel
In this work, the effects of electrochemical hydrogen charging of 316H grade austenitic stainless steel were investigated in order to characterize its hydrogen embrittlement (HE) resistance. The as-received 316H material was in a fully recrystallized (solution-annealed) material condition. The susce...
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MDPI AG
2022-10-01
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| author | Ladislav Falat Lucia Čiripová Ivan Petryshynets Ondrej Milkovič Miroslav Džupon Karol Kovaľ |
| author_facet | Ladislav Falat Lucia Čiripová Ivan Petryshynets Ondrej Milkovič Miroslav Džupon Karol Kovaľ |
| author_sort | Ladislav Falat |
| collection | DOAJ |
| description | In this work, the effects of electrochemical hydrogen charging of 316H grade austenitic stainless steel were investigated in order to characterize its hydrogen embrittlement (HE) resistance. The as-received 316H material was in a fully recrystallized (solution-annealed) material condition. The susceptibility to HE of the studied material was evaluated by determination of the embrittlement index from the results of conventional uniaxial tensile tests of nonhydrogenated and hydrogen-charged test specimens. The study was focused on the effects of two selected plastic pre-strain levels of tensile specimens on their resulting HE resistance. The selected pre-strains corresponded to the tensile stress conditions within the “yield stress–ultimate tensile strength” (YS–UTS) range and directly at the UTS point. The obtained embrittlement indices for the presently used pre-straining and hydrogen charging conditions indicated that the HE of the studied material states was small. However, it was revealed that the observed degradation of deformation properties of plastically pre-strained and hydrogen-charged materials was mainly caused by gradual plasticity exhaustion due to tensile straining, which well correlated with the observed effects indicated by electron backscatter diffraction analyses and indentation hardness measurements. |
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| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-09T20:25:13Z |
| publishDate | 2022-10-01 |
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| series | Crystals |
| spelling | doaj.art-531e71de0633405db65423fc78187b582023-11-23T23:38:08ZengMDPI AGCrystals2073-43522022-10-011210141910.3390/cryst12101419Hydrogen Embrittlement Behavior of Plastically Pre-Strained and Cathodically Hydrogen-Charged 316H Grade Austenitic Stainless SteelLadislav Falat0Lucia Čiripová1Ivan Petryshynets2Ondrej Milkovič3Miroslav Džupon4Karol Kovaľ5Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, SlovakiaInstitute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, SlovakiaInstitute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, SlovakiaInstitute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, SlovakiaInstitute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, SlovakiaInstitute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, SlovakiaIn this work, the effects of electrochemical hydrogen charging of 316H grade austenitic stainless steel were investigated in order to characterize its hydrogen embrittlement (HE) resistance. The as-received 316H material was in a fully recrystallized (solution-annealed) material condition. The susceptibility to HE of the studied material was evaluated by determination of the embrittlement index from the results of conventional uniaxial tensile tests of nonhydrogenated and hydrogen-charged test specimens. The study was focused on the effects of two selected plastic pre-strain levels of tensile specimens on their resulting HE resistance. The selected pre-strains corresponded to the tensile stress conditions within the “yield stress–ultimate tensile strength” (YS–UTS) range and directly at the UTS point. The obtained embrittlement indices for the presently used pre-straining and hydrogen charging conditions indicated that the HE of the studied material states was small. However, it was revealed that the observed degradation of deformation properties of plastically pre-strained and hydrogen-charged materials was mainly caused by gradual plasticity exhaustion due to tensile straining, which well correlated with the observed effects indicated by electron backscatter diffraction analyses and indentation hardness measurements.https://www.mdpi.com/2073-4352/12/10/1419austenitic steelhydrogen embrittlementmicrostructuretensile testfractography |
| spellingShingle | Ladislav Falat Lucia Čiripová Ivan Petryshynets Ondrej Milkovič Miroslav Džupon Karol Kovaľ Hydrogen Embrittlement Behavior of Plastically Pre-Strained and Cathodically Hydrogen-Charged 316H Grade Austenitic Stainless Steel Crystals austenitic steel hydrogen embrittlement microstructure tensile test fractography |
| title | Hydrogen Embrittlement Behavior of Plastically Pre-Strained and Cathodically Hydrogen-Charged 316H Grade Austenitic Stainless Steel |
| title_full | Hydrogen Embrittlement Behavior of Plastically Pre-Strained and Cathodically Hydrogen-Charged 316H Grade Austenitic Stainless Steel |
| title_fullStr | Hydrogen Embrittlement Behavior of Plastically Pre-Strained and Cathodically Hydrogen-Charged 316H Grade Austenitic Stainless Steel |
| title_full_unstemmed | Hydrogen Embrittlement Behavior of Plastically Pre-Strained and Cathodically Hydrogen-Charged 316H Grade Austenitic Stainless Steel |
| title_short | Hydrogen Embrittlement Behavior of Plastically Pre-Strained and Cathodically Hydrogen-Charged 316H Grade Austenitic Stainless Steel |
| title_sort | hydrogen embrittlement behavior of plastically pre strained and cathodically hydrogen charged 316h grade austenitic stainless steel |
| topic | austenitic steel hydrogen embrittlement microstructure tensile test fractography |
| url | https://www.mdpi.com/2073-4352/12/10/1419 |
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